import SwiftUI

struct AudioContentThumbnailCardItem: Identifiable {
    let id: Int
    let title: String
    let subtitle: String
    let imageUrl: String?
    let price: Int
    let isAdult: Bool
    let isPointAvailable: Bool
    let isFirstContent: Bool
    let isOriginalSeries: Bool
}

struct AudioContentThumbnailCard: View {
    let item: AudioContentThumbnailCardItem
    let width: CGFloat
    let titleTypography: SodaTypography
    let subtitleTypography: SodaTypography
    let labelHorizontalPadding: CGFloat

    init(
        item: AudioContentThumbnailCardItem,
        size: AudioContentCardSize
    ) {
        self.item = item
        self.width = size.width
        self.titleTypography = size.titleTypography
        self.subtitleTypography = size.subtitleTypography
        self.labelHorizontalPadding = size.labelHorizontalPadding
    }

    init(
        item: AudioContentThumbnailCardItem,
        width: CGFloat,
        titleTypography: SodaTypography = .heading4,
        subtitleTypography: SodaTypography = .body5,
        labelHorizontalPadding: CGFloat = 0
    ) {
        self.item = item
        self.width = width
        self.titleTypography = titleTypography
        self.subtitleTypography = subtitleTypography
        self.labelHorizontalPadding = labelHorizontalPadding
    }

    var body: some View {
        VStack(alignment: .leading, spacing: SodaSpacing.s8) {
            thumbnail

            labelContent
        }
        .frame(width: width, alignment: .leading)
    }

    private var thumbnail: some View {
        ZStack(alignment: .topLeading) {
            DownsampledKFImage(
                url: item.imageUrl.flatMap(URL.init(string:)),
                size: CGSize(width: width, height: width)
            )
            .background(Color.gray800)

            VStack(alignment: .leading, spacing: 0) {
                topTagRow

                Spacer(minLength: 0)

                bottomTagRow
            }
        }
        .frame(width: width, height: width)
        .clipShape(RoundedRectangle(cornerRadius: SodaSpacing.s14, style: .continuous))
    }

    private var labelContent: some View {
        VStack(alignment: .leading, spacing: 2) {
            Text(item.title)
                .appFont(titleTypography)
                .foregroundColor(.white)
                .lineLimit(1)
                .truncationMode(.tail)

            Text(item.subtitle)
                .appFont(subtitleTypography)
                .foregroundColor(Color.gray500)
                .lineLimit(1)
                .truncationMode(.tail)
        }
        .frame(width: width - (labelHorizontalPadding * 2), alignment: .leading)
        .padding(.horizontal, labelHorizontalPadding)
        .frame(width: width, alignment: .leading)
    }

    @ViewBuilder
    private var topTagRow: some View {
        HStack(spacing: 0) {
            if item.isOriginalSeries {
                originalTag
            }

            if item.isFirstContent {
                firstTag
            }

            Spacer(minLength: 0)

            if item.isAdult {
                adultTag
                    .padding(.top, SodaSpacing.s6)
                    .padding(.trailing, SodaSpacing.s6)
            }
        }
    }

    @ViewBuilder
    private var bottomTagRow: some View {
        HStack(spacing: 0) {
            if item.isPointAvailable {
                pointTag
            }

            if item.price == 0 {
                freeTag
            }
        }
    }

    private var originalTag: some View {
        Image("ic_content_tag_original")
            .resizable()
            .scaledToFit()
            .frame(width: 24, height: 24)
    }

    private var firstTag: some View {
        ZStack {
            Image("ic_content_tag_first_star")
                .resizable()
                .scaledToFit()
                .frame(width: 17, height: 17)
        }
        .padding(4)
        .background(Color(hex: "FF34B8"))
    }

    private var adultTag: some View {
        ZStack {
            Color(hex: "FF4C3C")

            Image("ic_new_shield_small")
                .resizable()
                .scaledToFit()
                .padding(2)
        }
        .frame(width: 18, height: 18)
        .cornerRadius(4)
    }

    private var pointTag: some View {
        Image("ic_content_tag_point")
            .resizable()
            .scaledToFit()
            .frame(width: 24, height: 24)
    }

    private var freeTag: some View {
        Text("무료")
            .appFont(size: 14, weight: .semibold)
            .foregroundColor(.white)
            .lineLimit(1)
            .padding(.horizontal, SodaSpacing.s4)
            .frame(height: 24)
            .background(Color.soda900)
    }
}

extension AudioContentThumbnailCardItem {
    init(audioCard: AudioCardResponse) {
        self.init(
            id: audioCard.audioContentId,
            title: audioCard.title,
            subtitle: audioCard.creatorNickname,
            imageUrl: audioCard.imageUrl,
            price: audioCard.price,
            isAdult: audioCard.isAdult,
            isPointAvailable: audioCard.isPointAvailable,
            isFirstContent: audioCard.isFirstContent,
            isOriginalSeries: audioCard.isOriginalSeries
        )
    }

    init(contentOverviewItem: ContentOverviewItemResponse) {
        self.init(
            id: contentOverviewItem.contentId,
            title: contentOverviewItem.title,
            subtitle: contentOverviewItem.creatorNickname,
            imageUrl: contentOverviewItem.coverImage,
            price: contentOverviewItem.price,
            isAdult: contentOverviewItem.isAdult,
            isPointAvailable: contentOverviewItem.isPointAvailable,
            isFirstContent: contentOverviewItem.isFirstContent,
            isOriginalSeries: contentOverviewItem.isOriginalSeries
        )
    }

    init(mainContentAudio: MainContentAudioResponse) {
        self.init(
            id: mainContentAudio.audioContentId,
            title: mainContentAudio.title,
            subtitle: mainContentAudio.creatorNickname,
            imageUrl: mainContentAudio.imageUrl,
            price: mainContentAudio.price,
            isAdult: mainContentAudio.isAdult,
            isPointAvailable: mainContentAudio.isPointAvailable,
            isFirstContent: mainContentAudio.isFirstContent,
            isOriginalSeries: mainContentAudio.isOriginalSeries
        )
    }
}

struct AudioContentThumbnailCard_Previews: PreviewProvider {
    static var previews: some View {
        HStack(alignment: .top, spacing: SodaSpacing.s14) {
            AudioContentThumbnailCard(
                item: AudioContentThumbnailCardItem(
                    id: 1,
                    title: "오디오 콘텐츠 제목입니다",
                    subtitle: "크리에이터명",
                    imageUrl: "https://picsum.photos/300/300",
                    price: 0,
                    isAdult: true,
                    isPointAvailable: true,
                    isFirstContent: true,
                    isOriginalSeries: true
                ),
                size: .medium
            )

            AudioContentThumbnailCard(
                item: AudioContentThumbnailCardItem(
                    id: 2,
                    title: "추천 오디오",
                    subtitle: "크리에이터명",
                    imageUrl: "https://picsum.photos/300/300",
                    price: 10,
                    isAdult: false,
                    isPointAvailable: false,
                    isFirstContent: true,
                    isOriginalSeries: true
                ),
                width: 170
            )
        }
        .padding(SodaSpacing.s20)
        .background(Color.black)
        .previewLayout(.sizeThatFits)
    }
}