//
//  rhlibrary
//
//  The Radio Helsinki Rivendell Library
//
//
//  Copyright (C) 2016 Christian Pointner <equinox@helsinki.at>
//
//  This file is part of rhlibrary.
//
//  rhlibrary is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  any later version.
//
//  rhlibrary is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with rhlibrary. If not, see <http://www.gnu.org/licenses/>.
//

package main

import (
	"sort"
	"strconv"
	"sync"

	"code.helsinki.at/rhrd-go/player"
	"code.helsinki.at/rhrd-go/rddb"
	"github.com/gotk3/gotk3/gtk"
)

var (
	showsMutex sync.Mutex
	shows      rddb.ShowList
)

// carts, err := db.GetShowCartList(show)
// if err != nil {
// 	return err
// }

// for _, cart := range carts {
// 	rhdl.Printf("  [%d]: %s\n", cart.Number, cart.Title)
// 	for _, cut := range cart.Cuts {
// 		rhdl.Printf("    %+v", cut)
// 	}
// }

// func appendShowListEntry(grid *gtk.Grid, show rddb.ShowListEntry, db *rddb.DBChan, p *player.PlayerChan) error {
// 	rhdl.Printf("Show: %d, %s\n", show.ID, show.Title)

// 	return nil
// }

func updateShows(box *gtk.ComboBoxText, db *rddb.DBChan) (err error) {
	showsMutex.Lock()
	defer showsMutex.Unlock()

	if shows, err = db.GetShowList(rhuser.Username); err != nil {
		return err
	}

	var keys []int
	for k, _ := range shows {
		keys = append(keys, int(k))
	}
	sort.Ints(keys)

	box.RemoveAll()
	for _, showid := range keys {
		box.Append(strconv.FormatUint(uint64(showid), 10), shows[uint(showid)].Title)
	}
	return
}

func selectShow(box *gtk.ComboBoxText) {
	showid64, err := strconv.ParseUint(box.GetActiveID(), 10, 32)
	if err != nil {
		rhdl.Printf("invalid show-id in combo box: %v", err)
		return
	}
	showid := uint(showid64)

	showsMutex.Lock()
	defer showsMutex.Unlock()

	rhdl.Printf("show %d is now selected: %s", showid, shows[showid].Title)
}

func addShowComboBox(grid *gtk.Grid, db *rddb.DBChan) (err error) {
	var label *gtk.Label
	if label, err = gtk.LabelNew("Sendung auswählen"); err != nil {
		return
	}
	grid.Attach(label, 1, 1, 1, 1)

	var box *gtk.ComboBoxText
	if box, err = gtk.ComboBoxTextNew(); err != nil {
		return
	}

	if err = updateShows(box, db); err != nil {
		return err
	}

	box.Connect("changed", func(_ *gtk.ComboBoxText) { selectShow(box) })

	box.SetActive(0)

	grid.Attach(box, 2, 1, 1, 1)
	return
}

func getShowsSelectorWidget(db *rddb.DBChan, p *player.PlayerChan) (gtk.IWidget, error) {
	grid, err := gtk.GridNew()
	if err != nil {
		return nil, err
	}
	grid.SetHExpand(true)
	grid.SetVExpand(true)

	if err = addShowComboBox(grid, db); err != nil {
		return nil, err
	}

	return grid, nil
}