//
//  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 (
	"sync"

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

var (
	jinglesMutex        sync.Mutex
	jingles             rddb.JingleList
	jinglesComboBox     *gtk.ComboBoxText
	jinglesCurrentGroup string
	jinglesCutListBin   *gtk.Bin
	jinglesCutList      *gtk.Grid
)

func fetchJingles(db *rddb.DBChan) (err error) {
	jinglesMutex.Lock()
	defer jinglesMutex.Unlock()

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

func updateJingles(db *rddb.DBChan) (err error) {
	if err = fetchJingles(db); err != nil {
		return
	}

	jinglesComboBox.RemoveAll()
	for group, jingle := range jingles {
		jinglesComboBox.Append(group, jingle.Description)
	}

	if !jinglesComboBox.SetActiveID(jinglesCurrentGroup) {
		jinglesComboBox.SetActive(0)
	}
	return
}

func addJingleComboBox(grid *gtk.Grid, db *rddb.DBChan, p *player.PlayerChan) (err error) {
	var box *gtk.Box
	if box, err = gtk.BoxNew(gtk.ORIENTATION_HORIZONTAL, 10); err != nil {
		return
	}

	var label *gtk.Label
	if label, err = gtk.LabelNew("Jingle Gruppe auswählen"); err != nil {
		return
	}
	box.PackStart(label, false, false, 0)

	if jinglesComboBox, err = gtk.ComboBoxTextNew(); err != nil {
		return
	}
	if err = updateJingles(db); err != nil {
		return err
	}
	jinglesComboBox.Connect("changed", func(_ *gtk.ComboBoxText) {
		// jingle := selectJingle()
		// if jingle.ID == 0 {
		// 	return
		// }

		// glib.IdleAdd(func() {
		// 	if err = updateJingleCutListRows(jingle, db, p); err != nil {
		// 		rhdl.Printf("error loading jingle cuts for %d", jingle.ID)
		// 		return
		// 	}
		// })
		// rhdl.Printf("jingle %d is now selected: %s", jingle.ID, jingle.Title)
	})

	box.PackStart(jinglesComboBox, true, true, 0)
	box.SetHExpand(true)

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

func addJingleCutList(grid *gtk.Grid, db *rddb.DBChan, p *player.PlayerChan) (err error) {
	var frame *gtk.Frame
	if frame, err = gtk.FrameNew(""); err != nil {
		return
	}
	jinglesCutListBin = &frame.Bin
	if err = setCssStyle(&frame.Widget, ".frame { border: 0; }"); err != nil {
		return
	}

	var sw *gtk.ScrolledWindow
	if sw, err = gtk.ScrolledWindowNew(nil, nil); err != nil {
		return
	}
	sw.SetHExpand(true)
	sw.SetVExpand(true)
	sw.Add(frame)

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

func getJinglesSelectorWidget(db *rddb.DBChan, p *player.PlayerChan) (gtk.IWidget, error) {
	grid, err := gtk.GridNew()
	if err != nil {
		return nil, err
	}
	grid.SetRowSpacing(25)
	grid.SetHExpand(true)
	grid.SetVExpand(true)

	if err = addJingleComboBox(grid, db, p); err != nil {
		return nil, err
	}
	if err = addJingleCutList(grid, db, p); err != nil {
		return nil, err
	}

	var frame *gtk.Frame
	if frame, err = gtk.FrameNew(""); err != nil {
		return nil, err
	}
	if err = setCssStyle(&frame.Widget, ".frame { border: 0; padding: 25px 42px; }"); err != nil {
		return nil, err
	}

	frame.Add(grid)

	return frame, nil
}