//
//  EpisodeList.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 Foundation
import LuminateCore

struct EpisodeList: View {

    var seriesId: String
    var seasonId: String
    var client: JellyfinClient
    var userId: String
    @State private var episodes: [Components.Schemas.BaseItemDto] = []

    var view: Body {
        VStack {
            ForEach(episodes) { episode in
                EpisodeRow(
                    episode: episode,
                    client: client
                )
            }
        }
        .onAppear {
            loadEpisodes()
        }
    }

    private func loadEpisodes() {
        Task {
            let result = try? await client.getEpisodes(
                seriesId: seriesId,
                userId: userId,
                seasonId: seasonId
            )
            await MainActor.run { episodes = result?.items ?? [] }
        }
    }
}

struct EpisodeRow: View {

    var episode: Components.Schemas.BaseItemDto
    var client: JellyfinClient
    @State private var imageData: Data?

    var view: Body {
        HStack {
            if let data = imageData {
                Picture()
                    .data(data)
                    .frame(minWidth: 100, minHeight: 56)
                    .frame(maxWidth: 100)
                    .frame(maxHeight: 56)
                    .card()
            } else {
                Box(spacing: 0) {}
                    .frame(minWidth: 100, minHeight: 56)
                    .frame(maxWidth: 100)
                    .frame(maxHeight: 56)
                    .card()
            }
            VStack {
                Text("\(episode.indexNumber ?? 0). \(episode.name ?? "")")
                    .body()
                    .halign(.start)
                Text(episode.runtimeString)
                    .caption()
                    .halign(.start)
            }
            .hexpand(true)
            Button(icon: .default(icon: .mediaPlaybackStart)) {

            }
            .flat()
        }
        .padding(10, .horizontal)
        .onAppear {
            loadImage()
        }
    }

    private func loadImage() {
        guard let tag = episode.primaryImageTag, let itemId = episode.id else {
            return
        }
        Task {
            guard
                let url = await client.imageURL(
                    itemId: itemId,
                    imageType: .primary,
                    tag: tag,
                    maxWidth: 200
                )
            else { return }
            let service = ImageService()
            imageData = try? await service.loadImage(url: url)
        }
    }
}