package main

import (
	// External
	re "git.gibonuddevalla.se/go/wrappederror"

	// Standard
	"encoding/json"
	"sort"
)

type Area struct {
	ID int
	Name string

	Sections []Section
}

func AreaRetrieve() (areas []Area, err error) {// {{{
	areas = []Area{}
	row := service.Db.Conn.QueryRow(`
		SELECT
			 jsonb_agg(jsonsections)
		FROM (
			SELECT
				a.id,
				a.name,
				jsonb_agg(
					jsonb_build_object(
						'id', s.id,
						'name', s.name
					)
				) AS sections
			FROM area a
			INNER JOIN section s ON s.area_id = a.id
			GROUP BY
				a.id, a.name
		) jsonsections`,
	)

	var jsonData []byte
	err = row.Scan(&jsonData)
	if err != nil {
		err = re.Wrap(err)
		return
	}

	err = json.Unmarshal(jsonData, &areas)
	if err != nil {
		err = re.Wrap(err)
		return
	}

	return
}// }}}

func (a Area) SortedSections() []Section {// {{{
	sort.SliceStable(a.Sections, func (i, j int) bool {
		return a.Sections[i].Name < a.Sections[j].Name
	})
	return a.Sections
}// }}}