958 lines
25 KiB
JavaScript
958 lines
25 KiB
JavaScript
export const ROOT_NODE = '00000000-0000-0000-0000-000000000000'
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export const ORPHANED_NODE = '00000000-0000-0000-0000-000000000001'
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export const DELETED_NODE = '00000000-0000-0000-0000-000000000002'
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export class Node {
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static sort(a, b) {//{{{
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// Nodes with children ("folders") are sorted first.
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if (a._has_children && !b._has_children) return -1
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if (!a._has_children && b._has_children) return 1
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// Otherwise sort by lowercased name.
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const an = a.data.Name.toLowerCase()
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const bn = b.data.Name.toLowerCase()
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if (an < bn) return -1
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if (an > bn) return 1
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return 0
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}//}}}
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static create(name, parentUUID) {// {{{
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const node = new Node({
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UUID: uuidv7(),
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Created: (new Date()).toISOString(),
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Content: '',
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Name: name,
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ParentUUID: parentUUID,
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Markdown: false,
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})
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// Newly created node (not constructed from existing data) is considered modified
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// since node.save returns early if it isn't modified.
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node._modified = true
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return node
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}// }}}
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constructor(nodeData, level) {//{{{
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this.Level = level
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this.data = nodeData
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this.UUID = nodeData.UUID
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// Toplevel nodes are normalized to have the ROOT_NODE as parent.
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if (nodeData.UUID !== ROOT_NODE && nodeData.ParentUUID === '') {
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this.ParentUUID = ROOT_NODE
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this.data.ParentUUID = ROOT_NODE
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} else
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this.ParentUUID = nodeData.ParentUUID
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this._children_fetched = false
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this._has_children = null // this will be set by nodeStore.getTreeNodes
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this.Children = []
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this.Ancestors = []
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this._sibling_before = null
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this._sibling_after = null
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this._parent = null
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this.reset()
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}//}}}
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reset() {// {{{
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// this._content is the runtime content in the editor.
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// this.data.Content is the original data.
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this._content = this.data.Content
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this._modified = false
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}// }}}
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get(prop) {//{{{
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return this.data[prop]
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}//}}}
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updated() {//{{{
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// '2024-12-17T17:33:48.85939Z
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return new Date(Date.parse(this.data.Updated))
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}//}}}
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isModified() {// {{{
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return this._modified
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}// }}}
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hasFetchedChildren() {//{{{
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return this._children_fetched
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}//}}}
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async fetchChildren() {//{{{
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this.Children = await globalThis.nodeStore.getTreeNodes(this.UUID, this.Level + 1)
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this._children_fetched = true
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// Children are sorted to allow for storing siblings befare and after.
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// These are used with keyboard navigation in the tree.
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this.Children.sort(Node.sort)
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const numChildren = this.Children.length
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this.setHasChildren(numChildren > 0)
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for (let i = 0; i < numChildren; i++) {
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if (i > 0)
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this.Children[i]._sibling_before = this.Children[i - 1]
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if (i < numChildren - 1)
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this.Children[i]._sibling_after = this.Children[i + 1]
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this.Children[i]._parent = this
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}
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return this.Children
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}//}}}
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setHasChildren(v) {// {{{
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this._has_children = v
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}// }}}
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hasChildren() {//{{{
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return this._has_children
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}//}}}
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getSiblingBefore() {// {{{
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return this._sibling_before
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}// }}}
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getSiblingAfter() {// {{{
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return this._sibling_after
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}// }}}
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getParent() {//{{{
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return this._parent
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}//}}}
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moveToParent(newParentUUID) {// {{{
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if (this.UUID === newParentUUID)
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throw new Error("New parent UUID is the same as node UUID. Can't be your own parent.")
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this.ParentUUID = newParentUUID
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this.data.ParentUUID = newParentUUID
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this._modified = true
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}// }}}
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isLastSibling() {//{{{
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return this._sibling_after === null
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}//}}}
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isFirstSibling() {//{{{
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return this._sibling_before === null
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}//}}}
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isSpecial() {// {{{
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return this.data.Special
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}// }}}
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content() {//{{{
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// TODO - implement crypto
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return this._content
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}//}}}
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setContent(new_content) {//{{{
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this._content = new_content
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this._modified = true
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_mbus.dispatch('NODE_MODIFIED', { node: this })
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}//}}}
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setName(new_name) {// {{{
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if (new_name.trim() === '')
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throw new Error(`The name can't be empty`)
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this.data.Name = new_name
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this._modified = true
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_mbus.dispatch('NODE_MODIFIED', { node: this })
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}// }}}
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async save() {//{{{
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try {
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const dblink = /db:\/\/([0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12})/gi
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// Just safeguarding not using the root node,
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// which sort of exist but isn't supposed to communicate to server.
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if (this.UUID == ROOT_NODE)
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return
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// File links from the original, unmodified content are found to compare to links from the new content.
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// All files (images) needs to be indexed to nodes in order to track orphaned files.
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const before = new Set([...this.data.Content.matchAll(dblink)].map(m => m[1]))
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const after = new Set([...this._content.matchAll(dblink)].map(m => m[1]))
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const removed = before.difference(after)
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const added = after.difference(before)
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await globalThis.nodeStore.filesNodelink.removeFileUUIDs(this.UUID, removed)
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await globalThis.nodeStore.filesNodelink.addFileUUIDs(this.UUID, added)
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// Authoritative content and metadata is set to prepare it for IndexedDB update.
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this.data.Content = this._content
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this.data.Updated = new Date().toISOString()
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this.data.HistoryUUID = uuidv7() // every time the node is saved a new history UUID identifies the changed node.
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_mbus.dispatch('NODE_UNMODIFIED')
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this._modified = false
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// When stored into database and ancestry was changed,
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// the ancestry path could be interesting.
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/*
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const ancestors = await nodeStore.getNodeAncestry(this)
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this.data.Ancestors = ancestors.map(a => a.get('Name')).reverse()
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*/
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/* The node history is a local store for node history.
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* This could be provisioned from the server or cleared if
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* deemed unnecessary.
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*
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* The send queue is what will be sent back to the server
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* to have a recorded history of the notes.
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*
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* A setting to be implemented in the future could be to
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* not save the history locally at all. */
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// Current node is added to history. It will be duplicated with the "nodes" store
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// for simplicity, to hopefully avoid bugs.
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const history = globalThis.nodeStore.nodesHistory.add(this)
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// Updated node is added to the send queue to be stored on server.
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const sendQueue = globalThis.nodeStore.sendQueue.add(this)
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// Updated node is saved to the primary node store.
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const nodeStoreAdding = globalThis.nodeStore.add([this])
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await Promise.all([history, sendQueue, nodeStoreAdding])
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} catch (err) {
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console.error(err)
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alert(err.message)
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}
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return
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}//}}}
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}
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export class NodeStore {
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constructor() {//{{{
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if (!('indexedDB' in self)) {
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throw 'Missing IndexedDB'
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}
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this.db = null
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this.nodes = {}
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this.sendQueue = null
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this.nodesHistory = null
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this.files = null
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this.filesMetadata = null
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this.initializeSpecialNodes()
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}//}}}
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initializeDB() {//{{{
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return new Promise((resolve, reject) => {
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const req = indexedDB.open('notes', 14)
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// Schema upgrades for IndexedDB.
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// These can start from different points depending on updates to Notes2 since a device was online.
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req.onupgradeneeded = (event) => {
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let nodes
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let appState
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let sendQueue
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let nodesHistory
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let files
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const db = event.target.result
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const trx = event.target.transaction
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for (let i = event.oldVersion + 1; i <= event.newVersion; i++) {
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console.log(`Upgrade to schema ${i}`)
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// The schema transformations.
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switch (i) {
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case 1:
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nodes = db.createObjectStore('nodes', { keyPath: 'UUID' })
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nodes.createIndex('byName', 'Name', { unique: false })
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break
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case 2:
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trx.objectStore('nodes').createIndex('byParent', 'ParentUUID', { unique: false })
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break
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case 3:
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appState = db.createObjectStore('app_state', { keyPath: 'key' })
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break
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case 4:
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trx.objectStore('nodes').createIndex('byModified', 'modified', { unique: false })
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break
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case 5:
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sendQueue = db.createObjectStore('send_queue', { keyPath: 'ClientSequence', autoIncrement: true })
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sendQueue.createIndex('updated', 'Updated', { unique: false })
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break
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case 6:
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nodesHistory = db.createObjectStore('nodes_history', { keyPath: ['UUID', 'HistoryUUID'] })
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break
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case 7:
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trx.objectStore('nodes_history').createIndex('byUUID', 'UUID', { unique: false })
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break
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case 8:
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files = db.createObjectStore('files', { keyPath: 'UUID' })
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break
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case 9:
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db.createObjectStore('files_metadata', { keyPath: 'UUID' })
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break
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case 10:
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trx.objectStore('files_metadata').createIndex('byUploaded', 'uploaded', { unique: false })
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break
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case 11:
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db.createObjectStore('files_nodelink', { keyPath: 'UUID' })
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break
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case 12:
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trx.objectStore('files_nodelink').createIndex('byNodeCount', 'NodeCount', { unique: false })
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break
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case 13:
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db.createObjectStore('file_segments', { keyPath: ['UUID', 'Sequence'] })
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break
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case 14:
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db.deleteObjectStore('files')
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break
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}
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}
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}
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req.onsuccess = (event) => {
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this.db = event.target.result
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this.sendQueue = new SimpleNodeStore(this.db, 'send_queue')
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this.nodesHistory = new NodeHistoryStore(this.db, 'nodes_history')
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this.files = new SimpleNodeStore(this.db, 'files')
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this.fileSegments = new FileSegmentsStore(this.db, 'file_segments')
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this.filesMetadata = new FilesMetadataStore(this.db, 'files_metadata')
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this.filesNodelink = new FileNodesLinkStore(this.db, 'files_nodelink')
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resolve()
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}
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req.onerror = (event) => {
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reject(event.target.error)
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}
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})
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}//}}}
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initializeSpecialNodes() {// {{{
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this.nodes[ROOT_NODE] = new Node({ UUID: ROOT_NODE, Name: 'Start', Special: true }, -1)
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this.nodes[DELETED_NODE] = new Node({ UUID: DELETED_NODE, Name: 'Deleted nodes', Special: true }, -1)
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this.nodes[ORPHANED_NODE] = new Node({ UUID: ORPHANED_NODE, Name: 'Orphaned nodes', Special: true }, -1)
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}// }}}
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node(uuid, dataIfUndefined, newLevel) {//{{{
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let n = this.nodes[uuid]
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if (n === undefined && dataIfUndefined !== undefined)
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n = this.nodes[uuid] = new Node(dataIfUndefined, newLevel)
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return n
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}//}}}
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getAppState(key) {//{{{
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return new Promise((resolve, reject) => {
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const trx = this.db.transaction('app_state', 'readonly')
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const appState = trx.objectStore('app_state')
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const getRequest = appState.get(key)
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getRequest.onsuccess = (event) => {
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if (event.target.result !== undefined) {
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resolve(event.target.result)
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} else {
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resolve(null)
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}
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}
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getRequest.onerror = (event) => reject(event.target.error)
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})
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}//}}}
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setAppState(key, value) {//{{{
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return new Promise((resolve, reject) => {
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try {
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const t = this.db.transaction('app_state', 'readwrite')
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const appState = t.objectStore('app_state')
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t.onerror = (event) => {
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console.log('transaction error', event.target.error)
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reject(event.target.error)
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}
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t.oncomplete = () => {
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resolve()
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}
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const record = { key, value }
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const addReq = appState.put(record)
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addReq.onerror = (event) => {
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console.log('Error!', event.target.error, key, value)
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}
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} catch (e) {
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reject(e)
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}
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})
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}//}}}
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getTreeNodes(parent, newLevel) {//{{{
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return new Promise((resolve, reject) => {
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// Parent of toplevel nodes is ROOT_NODE in indexedDB.
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// Only the root node has '' as parent.
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let storeParent = parent
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const trx = this.db.transaction('nodes', 'readonly')
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const nodeStore = trx.objectStore('nodes')
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const index = nodeStore.index('byParent')
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const req = index.getAll(storeParent)
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const hasChildrenPromises = []
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req.onsuccess = (event) => {
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const nodes = []
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for (const i in event.target.result) {
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const nodeData = event.target.result[i]
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const node = this.node(nodeData.UUID, nodeData, newLevel)
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// Look for the key of any children, a hopefully fast way
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// to tell if any children exists at all and this node is a
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// "folder". Needed quite early on for sorting.
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const promise = new Promise((resolve, reject) => {
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const countReq = index.getKey(nodeData.UUID)
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countReq.onsuccess = event => {
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node.setHasChildren(event.target.result !== undefined)
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resolve()
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}
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})
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hasChildrenPromises.push(promise)
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nodes.push(node)
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}
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Promise.all(hasChildrenPromises)
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.then(() => resolve(nodes))
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}
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req.onerror = (event) => reject(event.target.error)
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})
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}//}}}
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search(searchfor, parent) {//{{{
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return new Promise((resolve, reject) => {
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const trx = this.db.transaction('nodes', 'readonly')
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const nodeStore = trx.objectStore('nodes')
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const index = nodeStore.index('byParent')
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const req = index.getAll(parent)
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req.onsuccess = async (event) => {
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let nodes = []
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for (const i in event.target.result) {
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const nodeData = event.target.result[i]
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const children = await this.search(searchfor, nodeData.UUID)
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// Data is searched for the provided text.
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// TODO: implement an array of words to search?
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if (nodeData.Content.toLowerCase().includes(searchfor))
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nodes.push({
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uuid: nodeData.UUID,
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name: nodeData.Name,
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ancestry: await this.getNodeAncestry(nodeData, []),
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})
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nodes = nodes.concat(children)
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}
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resolve(nodes)
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return
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}
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req.onerror = (event) => reject(event.target.error)
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})
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}//}}}
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add(records, objstore) {//{{{
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return new Promise((resolve, reject) => {
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try {
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// A nodestore can be provided in order to
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// avoid creating new transactions.
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let nodeStore = objstore
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let t
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if (nodeStore === undefined) {
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t = this.db.transaction('nodes', 'readwrite')
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nodeStore = t.objectStore('nodes')
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t.oncomplete = (_event) => {
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resolve()
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}
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t.onerror = (event) => {
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console.error('transaction error', event.target.error)
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reject(event.target.error)
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}
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}
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// records is an object, not an array.
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for (const recordIdx in records) {
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const record = records[recordIdx]
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nodeStore.put(record.data)
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}
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resolve()
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} catch (e) {
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console.error(e)
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reject(e)
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}
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})
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}//}}}
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get(uuid, suppliedNodestore) {//{{{
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return new Promise((resolve, reject) => {
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switch (uuid) {
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case ROOT_NODE:
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case DELETED_NODE:
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case ORPHANED_NODE:
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resolve(this.nodes[uuid])
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return
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}
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// A nodestore can be provided in order to
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// avoid creating new transactions.
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let trx
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let nodeStore = suppliedNodestore
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if (nodeStore === undefined) {
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trx = this.db.transaction('nodes', 'readonly')
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nodeStore = trx.objectStore('nodes')
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}
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const getRequest = nodeStore.get(uuid)
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getRequest.onsuccess = (event) => {
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// Node not found in IndexedDB.
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if (event.target.result === undefined) {
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reject("No such node")
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return
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}
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const node = this.node(uuid, event.target.result, -1)
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resolve(node)
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}
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})
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}//}}}
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getNodeAncestry(node, accumulated) {//{{{
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return new Promise((resolve, reject) => {
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if (accumulated === undefined)
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accumulated = []
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const nodeParentIndex = this.db
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.transaction('nodes', 'readonly')
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.objectStore('nodes')
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if (node.UUID === ROOT_NODE || node.ParentUUID === ROOT_NODE) {
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resolve(accumulated)
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return
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}
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if (node.UUID === DELETED_NODE || node.ParentUUID === DELETED_NODE) {
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|
resolve(accumulated)
|
|
return
|
|
}
|
|
|
|
if (node.UUID === ORPHANED_NODE || node.ParentUUID === ORPHANED_NODE) {
|
|
resolve(accumulated)
|
|
return
|
|
}
|
|
|
|
const getRequest = nodeParentIndex.get(node.ParentUUID)
|
|
getRequest.onsuccess = (event) => {
|
|
// Node not found in IndexedDB.
|
|
// Not expected to happen.
|
|
const parentNodeData = event.target.result
|
|
if (parentNodeData === undefined) {
|
|
reject("No such node")
|
|
return
|
|
}
|
|
|
|
const parentNode = this.node(parentNodeData.UUID, parentNodeData, -1)
|
|
this.getNodeAncestry(parentNode, accumulated.concat(parentNode))
|
|
.then(accumulated => resolve(accumulated))
|
|
}
|
|
})
|
|
|
|
}//}}}
|
|
newTransaction(objectStore, mode) {// {{{
|
|
return this.db.transaction(objectStore, mode)
|
|
}// }}}
|
|
|
|
nodeCount() {//{{{
|
|
return new Promise((resolve, reject) => {
|
|
const t = this.db.transaction('nodes', 'readwrite')
|
|
const nodeStore = t.objectStore('nodes')
|
|
const countReq = nodeStore.count()
|
|
countReq.onsuccess = event => {
|
|
resolve(event.target.result)
|
|
}
|
|
})
|
|
}//}}}
|
|
|
|
async storeFile(file, reader, progressCallback) {// {{{
|
|
const metadata = new FileMetadata(file)
|
|
let processedBytes = 0
|
|
let stream
|
|
|
|
try {
|
|
// Do potentially larger blocks.
|
|
const BLOCKSIZE = 1048576
|
|
let buffer = new Uint8Array(BLOCKSIZE)
|
|
|
|
// Files from server got through fetch() will bring its own
|
|
// reader without going through a stream.
|
|
if (!reader) {
|
|
stream = file.stream()
|
|
reader = stream.getReader({ mode: 'byob' })
|
|
}
|
|
|
|
let seq = 0
|
|
while (true) {
|
|
const { done, value } = await reader.read(buffer)
|
|
if (done) break
|
|
|
|
processedBytes += value.length
|
|
if (progressCallback)
|
|
progressCallback(processedBytes)
|
|
|
|
// Block is added as a file segment.
|
|
await this.fileSegments.add({
|
|
data: {
|
|
UUID: metadata.UUID,
|
|
Sequence: seq,
|
|
Data: value,
|
|
}
|
|
})
|
|
buffer = new Uint8Array(value.buffer)
|
|
seq++
|
|
}
|
|
|
|
reader.releaseLock()
|
|
} catch (e) {
|
|
console.error(e)
|
|
alert(e.message)
|
|
}
|
|
|
|
await this.filesMetadata.add({ data: metadata })
|
|
|
|
return metadata
|
|
}// }}}
|
|
nextFileToSync() {// {{{
|
|
return new Promise((resolve, reject) => {
|
|
const req = this.db
|
|
.transaction('files_metadata', 'readonly')
|
|
.objectStore('files_metadata')
|
|
.index('byUploaded')
|
|
.get('only_on_device')
|
|
|
|
req.onerror = (e) => reject(e)
|
|
req.onsuccess = (e) => {
|
|
const data = e.target.result
|
|
|
|
// No more files to sync.
|
|
if (data === undefined) {
|
|
resolve(null)
|
|
return
|
|
}
|
|
|
|
resolve(new FileMetadata(data))
|
|
}
|
|
})
|
|
}// }}}
|
|
}
|
|
|
|
class SimpleNodeStore {
|
|
constructor(db, storeName) {//{{{
|
|
this.db = db
|
|
this.storeName = storeName
|
|
}//}}}
|
|
add(node) {//{{{
|
|
return new Promise((resolve, reject) => {
|
|
const t = this.db.transaction(['nodes', this.storeName], 'readwrite')
|
|
const store = t.objectStore(this.storeName)
|
|
t.onerror = (event) => {
|
|
console.log('transaction error', event.target.error)
|
|
reject(event.target.error)
|
|
}
|
|
|
|
// Node to be moved is first stored in the new queue.
|
|
const req = store.put(node.data)
|
|
req.onsuccess = () => {
|
|
resolve()
|
|
}
|
|
req.onerror = (event) => {
|
|
console.log(`Error adding ${node.UUID}`, event.target.error)
|
|
reject(event.target.error)
|
|
}
|
|
})
|
|
}//}}}
|
|
get(key) {//{{{
|
|
return new Promise((resolve, _reject) => {
|
|
const req = this.db
|
|
.transaction(['nodes', this.storeName], 'readonly')
|
|
.objectStore(this.storeName)
|
|
.get(key)
|
|
|
|
req.onsuccess = (event) => {
|
|
resolve(event.target.result)
|
|
}
|
|
})
|
|
}//}}}
|
|
retrieve(limit) {//{{{
|
|
return new Promise((resolve, _reject) => {
|
|
const cursorReq = this.db
|
|
.transaction(['nodes', this.storeName], 'readonly')
|
|
.objectStore(this.storeName)
|
|
.index('updated')
|
|
.openCursor()
|
|
|
|
let retrieved = 0
|
|
const nodes = []
|
|
|
|
cursorReq.onsuccess = (event) => {
|
|
const cursor = event.target.result
|
|
if (!cursor) {
|
|
resolve(nodes)
|
|
return
|
|
}
|
|
retrieved++
|
|
nodes.push(cursor.value)
|
|
if (retrieved === limit) {
|
|
resolve(nodes)
|
|
return
|
|
}
|
|
|
|
cursor.continue()
|
|
}
|
|
})
|
|
}//}}}
|
|
delete(keys) {//{{{
|
|
const store = this.db
|
|
.transaction(['nodes', this.storeName], 'readwrite')
|
|
.objectStore(this.storeName)
|
|
|
|
const promises = []
|
|
for (const key of keys) {
|
|
const p = new Promise((resolve, reject) => {
|
|
// TODO - implement a way to add an error to a page-global error log.
|
|
const request = store.delete(key)
|
|
request.onsuccess = (event) => resolve(event)
|
|
request.onerror = (event) => reject(event)
|
|
})
|
|
promises.push(p)
|
|
}
|
|
return Promise.all(promises)
|
|
}//}}}
|
|
count() {//{{{
|
|
const store = this.db
|
|
.transaction(['nodes', this.storeName], 'readonly')
|
|
.objectStore(this.storeName)
|
|
return new Promise((resolve, reject) => {
|
|
const request = store.count()
|
|
request.onsuccess = (event) => resolve(event.target.result)
|
|
request.onerror = (event) => reject(event.target.error)
|
|
})
|
|
}//}}}
|
|
}
|
|
|
|
class NodeHistoryStore extends SimpleNodeStore {
|
|
constructor(db, storeName) {//{{{
|
|
super(db, storeName)
|
|
}//}}}
|
|
count(uuid) {//{{{
|
|
if (uuid === undefined)
|
|
return super.count()
|
|
|
|
const index = this.db
|
|
.transaction(['nodes', this.storeName], 'readonly')
|
|
.objectStore(this.storeName)
|
|
.index('byUUID')
|
|
|
|
return new Promise((resolve, reject) => {
|
|
const request = index.count(uuid)
|
|
request.onsuccess = (event) => resolve(event.target.result)
|
|
request.onerror = (event) => reject(event.target.error)
|
|
})
|
|
}//}}}
|
|
hasNode(uuid, updated) {// {{{
|
|
return new Promise((resolve, reject) => {
|
|
const req = this.db
|
|
.transaction(['nodes', this.storeName], 'readonly')
|
|
.objectStore(this.storeName)
|
|
.getKey([uuid, updated])
|
|
|
|
req.onsuccess = (event) => {
|
|
resolve(event.target.result !== undefined)
|
|
}
|
|
|
|
req.onerror = (event) => {
|
|
console.error(event.target.error)
|
|
reject(event.target.error)
|
|
}
|
|
})
|
|
}// }}}
|
|
retrievePage(uuid, perPage, page) {// {{{
|
|
return new Promise((resolve, _reject) => {
|
|
|
|
const lowerBound = [uuid, '00000000-0000-0000-0000-000000000000']
|
|
const upperBound = [uuid, 'ffffffff-ffff-ffff-ffff-ffffffffffff']
|
|
const range = IDBKeyRange.bound(lowerBound, upperBound)
|
|
|
|
const cursor = this.db
|
|
.transaction(['nodes', this.storeName], 'readonly')
|
|
.objectStore(this.storeName)
|
|
.openCursor(range, 'prev')
|
|
|
|
let retrieved = 0
|
|
let first = true
|
|
const nodes = []
|
|
|
|
cursor.onsuccess = (event) => {
|
|
const cursor = event.target.result
|
|
if (!cursor) {
|
|
resolve(nodes)
|
|
return
|
|
}
|
|
|
|
// openCursor returns the first value which is only useful
|
|
// if the first page is requested.
|
|
if (page == 1 || !first) {
|
|
retrieved++
|
|
nodes.push(new Node(cursor.value))
|
|
if (retrieved === perPage) {
|
|
resolve(nodes)
|
|
return
|
|
}
|
|
cursor.continue()
|
|
return
|
|
}
|
|
|
|
// Jump to the start of the requested page.
|
|
// Minus one since the first record was already returned.
|
|
if (page > 1 && first) {
|
|
first = false
|
|
cursor.advance((perPage * (page - 1)))
|
|
return
|
|
}
|
|
}
|
|
})
|
|
}// }}}
|
|
}
|
|
|
|
class FileSegmentsStore extends SimpleNodeStore {
|
|
constructor(db, storeName) {//{{{
|
|
super(db, storeName)
|
|
}//}}}
|
|
async getStream(uuid) {// {{{
|
|
let seq = 0
|
|
const meself = this
|
|
|
|
return new ReadableStream({
|
|
type: 'bytes',
|
|
|
|
async pull(controller) {
|
|
try {
|
|
while (true) {
|
|
const chunk = await meself.get([uuid, seq])
|
|
if (!chunk) {
|
|
controller.close()
|
|
return
|
|
}
|
|
|
|
controller.enqueue(chunk.Data)
|
|
seq++
|
|
}
|
|
} catch (e) {
|
|
console.error(e)
|
|
}
|
|
}
|
|
})
|
|
}// }}}
|
|
}
|
|
|
|
class FilesMetadataStore extends SimpleNodeStore {
|
|
countToUpload() {// {{{
|
|
const store = this.db
|
|
.transaction(this.storeName, 'readonly')
|
|
.objectStore(this.storeName)
|
|
.index('byUploaded')
|
|
return new Promise((resolve, reject) => {
|
|
const request = store.count('only_on_device')
|
|
request.onsuccess = (event) => resolve(event.target.result)
|
|
request.onerror = (event) => reject(event.target.error)
|
|
})
|
|
}// }}}
|
|
}
|
|
|
|
class FileNodesLinkStore extends SimpleNodeStore {
|
|
async removeFileUUIDs(nodeUUID, fileUUIDs) {// {{{
|
|
for (const fileUUID of fileUUIDs) {
|
|
let nodelink = await this.get(fileUUID)
|
|
|
|
// Nothing to remove from.
|
|
if (nodelink === undefined)
|
|
continue
|
|
|
|
const idx = nodelink.Nodes.indexOf(nodeUUID)
|
|
if (idx > -1)
|
|
nodelink.Nodes.splice(idx, 1)
|
|
|
|
// Maintains an index to quickly find orphaned files.
|
|
nodelink.NodeCount = nodelink.Nodes.length
|
|
|
|
await this.add({ data: nodelink })
|
|
}
|
|
}// }}}
|
|
async addFileUUIDs(nodeUUID, fileUUIDs) {// {{{
|
|
for (const fileUUID of fileUUIDs) {
|
|
let nodelink = await this.get(fileUUID)
|
|
|
|
// Needs to be initialized if not existing already.
|
|
if (nodelink === undefined)
|
|
nodelink = {
|
|
UUID: fileUUID,
|
|
Nodes: [nodeUUID],
|
|
}
|
|
|
|
// Can get called with the same UUID as already there.
|
|
// No duplicates, only append if missing.
|
|
if (!nodelink.Nodes.includes(nodeUUID))
|
|
nodelink.Nodes.push(nodeUUID)
|
|
|
|
// Maintains an index to quickly find orphaned files.
|
|
nodelink.NodeCount = nodelink.Nodes.length
|
|
|
|
await this.add({ data: nodelink })
|
|
}
|
|
}// }}}
|
|
}
|
|
|
|
class FileMetadata {
|
|
constructor(data) {// {{{
|
|
this.UUID = data.UUID || uuidv7()
|
|
this.uploaded = data.uploaded || 'only_on_device'
|
|
|
|
this.name = data.name
|
|
this.size = data.size
|
|
this.type = data.type || 'application/octet-stream'
|
|
this.modified = data.modified || data.lastModified || Date.now()
|
|
}// }}}
|
|
setUploaded() {// {{{
|
|
this.uploaded = 'on_server'
|
|
}// }}}
|
|
get data() {// {{{
|
|
return {
|
|
UUID: this.UUID,
|
|
uploaded: this.uploaded,
|
|
name: this.name,
|
|
size: this.size,
|
|
type: this.type,
|
|
modified: this.modified,
|
|
}
|
|
}// }}}
|
|
}
|
|
|
|
export function uuidv7() {// {{{
|
|
// random bytes
|
|
const value = new Uint8Array(16)
|
|
crypto.getRandomValues(value)
|
|
|
|
// current timestamp in ms
|
|
const timestamp = BigInt(Date.now())
|
|
|
|
// timestamp
|
|
value[0] = Number((timestamp >> 40n) & 0xffn)
|
|
value[1] = Number((timestamp >> 32n) & 0xffn)
|
|
value[2] = Number((timestamp >> 24n) & 0xffn)
|
|
value[3] = Number((timestamp >> 16n) & 0xffn)
|
|
value[4] = Number((timestamp >> 8n) & 0xffn)
|
|
value[5] = Number(timestamp & 0xffn)
|
|
|
|
// version and variant
|
|
value[6] = (value[6] & 0x0f) | 0x70
|
|
value[8] = (value[8] & 0x3f) | 0x80
|
|
|
|
const str = Array.from(value)
|
|
.map((b) => b.toString(16).padStart(2, "0"))
|
|
.join("")
|
|
return `${str.slice(0, 8)}-${str.slice(8, 12)}-${str.slice(12, 16)}-${str.slice(16, 20)}-${str.slice(20)}`
|
|
}// }}}
|
|
|
|
// vim: foldmethod=marker
|