//
//  PlayerControls.swift
//
//  Copyright 2026 Brendan Szymanski <hello@bscubed.dev>
//
//  This program 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
//  (at your option) any later version.
//
//  This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
//
//  SPDX-License-Identifier: GPL-3.0-or-later
//

import Adwaita
import LuminateCore
import LuminateUI

public struct PlayerControls: View {

    @Binding var isPlaying: Bool
    @Binding var position: Double
    @Binding var duration: Double
    var playbackState: PlayerPlaybackState?
    public var onClose: () -> Void
    public var onSeekBack: () -> Void
    public var onSeekForward: () -> Void
    public var onSeekAbsolute: (Double) -> Void
    public var onFullscreen: () -> Void
    public var onSubtitleAudio: () -> Void

    init(
        isPlaying: Binding<Bool>,
        position: Binding<Double>,
        duration: Binding<Double>,
        playbackState: PlayerPlaybackState? = nil,
        onClose: @escaping () -> Void,
        onSeekBack: @escaping () -> Void,
        onSeekForward: @escaping () -> Void,
        onSeekAbsolute: @escaping (Double) -> Void,
        onFullscreen: @escaping () -> Void,
        onSubtitleAudio: @escaping () -> Void
    ) {
        self._isPlaying = isPlaying
        self._position = position
        self._duration = duration
        self.playbackState = playbackState
        self.onClose = onClose
        self.onSeekBack = onSeekBack
        self.onSeekForward = onSeekForward
        self.onSeekAbsolute = onSeekAbsolute
        self.onFullscreen = onFullscreen
        self.onSubtitleAudio = onSubtitleAudio
    }

    public var view: Body {
        Box {
            HStack(spacing: 6) {
                Button(icon: .custom(name: "skip-backwards-10-symbolic")) {
                    onSeekBack()
                }
                .style("circular")

                Button(icon: .default(icon: isPlaying ? .mediaPlaybackPause : .mediaPlaybackStart)) {
                    isPlaying.toggle()
                }
                .style("circular")

                Button(icon: .custom(name: "skip-forward-10-symbolic")) {
                    onSeekForward()
                }
                .style("circular")

                Separator()
                    .style("spacer")

                Text(formatTime(position))
                    .caption()

                SeekBar(
                    value: $position,
                    range: 0...(duration > 0 ? duration : 1),
                    playbackState: playbackState,
                    onSeek: { newPos in
                        onSeekAbsolute(newPos)
                    }
                )
                .hexpand(true)

                Text("-\(formatTime(max(0, duration - position)))")
                    .caption()

                Separator()
                    .style("spacer")

                Button(icon: .custom(name: "language-symbolic")) {
                    onSubtitleAudio()
                }
                .style("flat")

                Button(icon: .default(icon: .audioVolumeHigh)) {
                    // Volume popover — future
                }
                .style("flat")
                .insensitive()

                Button(icon: .default(icon: .viewFullscreen)) {
                    onFullscreen()
                }
                .style("flat")
            }
            .padding()
        }
        .style("card")
        .style("view")
    }

    private func formatTime(_ seconds: Double) -> String {
        guard seconds.isFinite, seconds >= 0 else { return "0:00" }
        let h = Int(seconds) / 3600
        let m = (Int(seconds) / 60) % 60
        let s = Int(seconds) % 60
        if h > 0 {
            return String(format: "%d:%02d:%02d", h, m, s)
        }
        return String(format: "%d:%02d", m, s)
    }
}