//
//  MaterialManagementModels.swift
//  suixinkan
//

import Foundation

/// 素材管理筛选状态，对齐 Android `MaterialListViewModel` 的四档筛选。
enum MaterialFilterStatus: Int, CaseIterable, Sendable, Equatable {
    case all = 0
    case approved = 1
    case pending = 2
    case rejected = 3

    /// 展示文案。
    var title: String {
        switch self {
        case .all: "全部"
        case .approved: "已通过"
        case .pending: "待审核"
        case .rejected: "未通过"
        }
    }

    /// 服务端 `status` 参数，Android 映射为：全部 4、已通过 1、待审核 0、未通过 2。
    var apiStatus: Int {
        switch self {
        case .all: 4
        case .approved: 1
        case .pending: 0
        case .rejected: 2
        }
    }
}

/// 素材媒体类型，对齐 Android `mediaType`：1 图片，2 视频。
enum MaterialMediaType: Int, CaseIterable, Sendable, Equatable {
    case image = 1
    case video = 2

    /// 展示文案。
    var title: String {
        switch self {
        case .image: "图片"
        case .video: "视频"
        }
    }

    /// 最大可选数量。
    var maxCount: Int {
        switch self {
        case .image: 9
        case .video: 1
        }
    }

    /// OSS 文件类型，Android 上传任务中视频为 1、图片为 2。
    var uploadFileType: Int {
        switch self {
        case .image: 2
        case .video: 1
        }
    }

}

/// 素材列表项，对齐 Android `MaterialItemEntity`。
struct MaterialItem: Decodable, Sendable, Equatable, Hashable, Identifiable {
    let id: Int
    let name: String
    let coverUrl: String
    let createdAt: String
    let status: Int
    let downloadCount: Int
    let likesCount: Int
    let collectCount: Int
    let shareCount: Int
    let scenicSpotName: String
    let projectName: String
    let listingStatus: Int

    enum CodingKeys: String, CodingKey {
        case id
        case name
        case coverUrl = "cover_url"
        case createdAt = "created_at"
        case status
        case downloadCount = "download_count"
        case likesCount = "likes_count"
        case collectCount = "collect_count"
        case shareCount = "share_count"
        case scenicSpotName = "scenic_spot_name"
        case projectName = "project_name"
        case listingStatus = "listing_status"
    }

    init(
        id: Int = 0,
        name: String = "",
        coverUrl: String = "",
        createdAt: String = "",
        status: Int = 0,
        downloadCount: Int = 0,
        likesCount: Int = 0,
        collectCount: Int = 0,
        shareCount: Int = 0,
        scenicSpotName: String = "",
        projectName: String = "",
        listingStatus: Int = 0
    ) {
        self.id = id
        self.name = name
        self.coverUrl = coverUrl
        self.createdAt = createdAt
        self.status = status
        self.downloadCount = downloadCount
        self.likesCount = likesCount
        self.collectCount = collectCount
        self.shareCount = shareCount
        self.scenicSpotName = scenicSpotName
        self.projectName = projectName
        self.listingStatus = listingStatus
    }

    init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: CodingKeys.self)
        id = try container.decodeIfPresent(Int.self, forKey: .id) ?? 0
        name = try container.decodeIfPresent(String.self, forKey: .name) ?? ""
        coverUrl = try container.decodeIfPresent(String.self, forKey: .coverUrl) ?? ""
        createdAt = try container.decodeIfPresent(String.self, forKey: .createdAt) ?? ""
        status = try container.decodeIfPresent(Int.self, forKey: .status) ?? 0
        downloadCount = try container.decodeIfPresent(Int.self, forKey: .downloadCount) ?? 0
        likesCount = try container.decodeIfPresent(Int.self, forKey: .likesCount) ?? 0
        collectCount = try container.decodeIfPresent(Int.self, forKey: .collectCount) ?? 0
        shareCount = try container.decodeIfPresent(Int.self, forKey: .shareCount) ?? 0
        scenicSpotName = try container.decodeIfPresent(String.self, forKey: .scenicSpotName) ?? ""
        projectName = try container.decodeIfPresent(String.self, forKey: .projectName) ?? ""
        listingStatus = try container.decodeIfPresent(Int.self, forKey: .listingStatus) ?? 0
    }
}

/// 素材列表响应，对齐 Android `MaterialListResponse`。
struct MaterialListResponse: Decodable, Sendable, Equatable {
    let total: Int
    let list: [MaterialItem]
    let order: MaterialOrderInfo?

    init(total: Int = 0, list: [MaterialItem] = [], order: MaterialOrderInfo? = nil) {
        self.total = total
        self.list = list
        self.order = order
    }
}

/// 素材订单统计信息，对齐 Android `MaterialOrderInfo`。
struct MaterialOrderInfo: Decodable, Sendable, Equatable, Hashable {
    let totalNum: Int
    let avgOrderAmount: String
    let refundTotal: String
    let avgChange: Int

    enum CodingKeys: String, CodingKey {
        case totalNum = "total_num"
        case avgOrderAmount = "avg_order_amount"
        case refundTotal = "refund_total"
        case avgChange = "avg_change"
    }

    init(totalNum: Int = 0, avgOrderAmount: String = "0", refundTotal: String = "0", avgChange: Int = 0) {
        self.totalNum = totalNum
        self.avgOrderAmount = avgOrderAmount
        self.refundTotal = refundTotal
        self.avgChange = avgChange
    }

    init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: CodingKeys.self)
        totalNum = try container.decodeIfPresent(Int.self, forKey: .totalNum) ?? 0
        avgOrderAmount = try container.decodeIfPresent(String.self, forKey: .avgOrderAmount) ?? "0"
        refundTotal = try container.decodeIfPresent(String.self, forKey: .refundTotal) ?? "0"
        avgChange = try container.decodeIfPresent(Int.self, forKey: .avgChange) ?? 0
    }
}

/// 素材详情响应，对齐 Android `MaterialDetailResponse`。
struct MaterialDetail: Decodable, Sendable, Equatable {
    let id: Int
    let name: String?
    let type: String?
    let ossUrl: String?
    let coverUrl: String?
    let coverSize: Int?
    let description: String?
    let scenicSpotId: Int64?
    let scenicAreaId: Int?
    let materialTag: [MaterialTagItem]?
    let uploaderId: Int?
    let status: Int
    let likesCount: Int
    let downloadCount: Int
    let collectCount: Int
    let isRecommended: Bool
    let createdAt: String?
    let updatedAt: String?
    let deletedAt: String?
    let listingStatus: Int
    let reviewNotes: String?
    let reviewTime: String?
    let reviewerId: Int?
    let reviewer: String?
    let provinceId: Int?
    let cityId: Int?
    let shareCount: Int
    let isWeb: Int
    let isMini: Int
    let uploaderName: String?
    let uploaderAvatar: String?
    let uploaderDescription: String?
    let platformCertification: Bool
    let scenicCertification: Bool
    let mediaList: [MaterialDetailMediaItem]?

    enum CodingKeys: String, CodingKey {
        case id
        case name
        case type
        case ossUrl = "oss_url"
        case coverUrl = "cover_url"
        case coverSize = "cover_size"
        case description
        case scenicSpotId = "scenic_spot_id"
        case scenicAreaId = "scenic_area_id"
        case materialTag = "material_tag"
        case uploaderId = "uploader_id"
        case status
        case likesCount = "likes_count"
        case downloadCount = "download_count"
        case collectCount = "collect_count"
        case isRecommended = "is_recommended"
        case createdAt = "created_at"
        case updatedAt = "updated_at"
        case deletedAt = "deleted_at"
        case listingStatus = "listing_status"
        case reviewNotes = "review_notes"
        case reviewTime = "review_time"
        case reviewerId = "reviewer_id"
        case reviewer
        case provinceId = "province_id"
        case cityId = "city_id"
        case shareCount = "share_count"
        case isWeb = "is_web"
        case isMini = "is_mini"
        case uploaderName = "uploader_name"
        case uploaderAvatar = "uploader_avatar"
        case uploaderDescription = "uploader_description"
        case platformCertification = "platform_certification"
        case scenicCertification = "scenic_certification"
        case mediaList = "media_list"
    }

    init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: CodingKeys.self)
        id = try container.decodeIfPresent(Int.self, forKey: .id) ?? 0
        name = try container.decodeIfPresent(String.self, forKey: .name)
        type = try container.decodeFlexibleString(forKey: .type)
        ossUrl = try container.decodeIfPresent(String.self, forKey: .ossUrl)
        coverUrl = try container.decodeIfPresent(String.self, forKey: .coverUrl)
        coverSize = try container.decodeIfPresent(Int.self, forKey: .coverSize)
        description = try container.decodeIfPresent(String.self, forKey: .description)
        scenicSpotId = try container.decodeFlexibleInt64(forKey: .scenicSpotId)
        scenicAreaId = try container.decodeIfPresent(Int.self, forKey: .scenicAreaId)
        materialTag = try container.decodeIfPresent([MaterialTagItem].self, forKey: .materialTag)
        uploaderId = try container.decodeIfPresent(Int.self, forKey: .uploaderId)
        status = try container.decodeIfPresent(Int.self, forKey: .status) ?? 0
        likesCount = try container.decodeIfPresent(Int.self, forKey: .likesCount) ?? 0
        downloadCount = try container.decodeIfPresent(Int.self, forKey: .downloadCount) ?? 0
        collectCount = try container.decodeIfPresent(Int.self, forKey: .collectCount) ?? 0
        isRecommended = try container.decodeIfPresent(Bool.self, forKey: .isRecommended) ?? false
        createdAt = try container.decodeIfPresent(String.self, forKey: .createdAt)
        updatedAt = try container.decodeIfPresent(String.self, forKey: .updatedAt)
        deletedAt = try container.decodeIfPresent(String.self, forKey: .deletedAt)
        listingStatus = try container.decodeIfPresent(Int.self, forKey: .listingStatus) ?? 0
        reviewNotes = try container.decodeIfPresent(String.self, forKey: .reviewNotes)
        reviewTime = try container.decodeIfPresent(String.self, forKey: .reviewTime)
        reviewerId = try container.decodeIfPresent(Int.self, forKey: .reviewerId)
        reviewer = try container.decodeIfPresent(String.self, forKey: .reviewer)
        provinceId = try container.decodeIfPresent(Int.self, forKey: .provinceId)
        cityId = try container.decodeIfPresent(Int.self, forKey: .cityId)
        shareCount = try container.decodeIfPresent(Int.self, forKey: .shareCount) ?? 0
        isWeb = try container.decodeIfPresent(Int.self, forKey: .isWeb) ?? 0
        isMini = try container.decodeIfPresent(Int.self, forKey: .isMini) ?? 0
        uploaderName = try container.decodeIfPresent(String.self, forKey: .uploaderName)
        uploaderAvatar = try container.decodeIfPresent(String.self, forKey: .uploaderAvatar)
        uploaderDescription = try container.decodeIfPresent(String.self, forKey: .uploaderDescription)
        platformCertification = try container.decodeIfPresent(Bool.self, forKey: .platformCertification) ?? false
        scenicCertification = try container.decodeIfPresent(Bool.self, forKey: .scenicCertification) ?? false
        mediaList = try container.decodeIfPresent([MaterialDetailMediaItem].self, forKey: .mediaList)
    }
}

/// 素材标签项。
struct MaterialTagItem: Codable, Sendable, Equatable, Hashable, Identifiable {
    let id: Int
    let name: String
}

/// 素材详情媒体项，对齐 Android `MaterialDetailMediaItem`。
struct MaterialDetailMediaItem: Decodable, Sendable, Equatable, Hashable, Identifiable {
    let id: Int
    let originalName: String?
    let paidMaterialId: Int?
    let ossUrl: String?
    let thumbnailUrl: String?
    let type: Int
    let size: Int64?
    let createdAt: String?
    let updatedAt: String?
    let deletedAt: String?
    let likesCount: Int
    let downloadCount: Int
    let showUrl: String?
    let width: Int?
    let height: Int?

    enum CodingKeys: String, CodingKey {
        case id
        case originalName = "original_name"
        case paidMaterialId = "paid_material_id"
        case ossUrl = "oss_url"
        case thumbnailUrl = "thumbnail_url"
        case type
        case size
        case createdAt = "created_at"
        case updatedAt = "updated_at"
        case deletedAt = "deleted_at"
        case likesCount = "likes_count"
        case downloadCount = "download_count"
        case showUrl = "show_url"
        case width
        case height
    }

    init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: CodingKeys.self)
        id = try container.decodeIfPresent(Int.self, forKey: .id) ?? 0
        originalName = try container.decodeIfPresent(String.self, forKey: .originalName)
        paidMaterialId = try container.decodeIfPresent(Int.self, forKey: .paidMaterialId)
        ossUrl = try container.decodeIfPresent(String.self, forKey: .ossUrl)
        thumbnailUrl = try container.decodeIfPresent(String.self, forKey: .thumbnailUrl)
        type = try container.decodeIfPresent(Int.self, forKey: .type) ?? 1
        size = try container.decodeIfPresent(Int64.self, forKey: .size)
        createdAt = try container.decodeIfPresent(String.self, forKey: .createdAt)
        updatedAt = try container.decodeIfPresent(String.self, forKey: .updatedAt)
        deletedAt = try container.decodeIfPresent(String.self, forKey: .deletedAt)
        likesCount = try container.decodeIfPresent(Int.self, forKey: .likesCount) ?? 0
        downloadCount = try container.decodeIfPresent(Int.self, forKey: .downloadCount) ?? 0
        showUrl = try container.decodeIfPresent(String.self, forKey: .showUrl)
        width = try container.decodeIfPresent(Int.self, forKey: .width)
        height = try container.decodeIfPresent(Int.self, forKey: .height)
    }

    /// 详情轮播优先展示地址。
    var displayURL: String {
        (ossUrl?.trimmingCharacters(in: .whitespacesAndNewlines).sxkNonEmpty)
            ?? (showUrl?.trimmingCharacters(in: .whitespacesAndNewlines).sxkNonEmpty)
            ?? ""
    }
}

/// 素材上传与编辑请求，对齐 Android `UploadMaterialRequest` / `EditMaterialRequest`。
struct MaterialUploadRequest: Encodable, Sendable, Equatable {
    let id: Int?
    let name: String
    let type: String
    let mediaType: String
    let mediaList: [MaterialUploadMediaItem]
    let coverUrl: String
    let coverSize: String
    let scenicSpotId: Int64
    let description: String
    let materialTag: String

    enum CodingKeys: String, CodingKey {
        case id
        case name
        case type
        case mediaType = "media_type"
        case mediaList = "media_list"
        case coverUrl = "cover_url"
        case coverSize = "cover_size"
        case scenicSpotId = "scenic_spot_id"
        case description
        case materialTag = "material_tag"
    }

    init(
        id: Int? = nil,
        name: String,
        mediaType: MaterialMediaType,
        mediaList: [MaterialUploadMediaItem],
        coverUrl: String,
        coverSize: String,
        scenicSpotId: Int64,
        materialTag: String
    ) {
        self.id = id
        self.name = name
        self.type = "1"
        self.mediaType = String(mediaType.rawValue)
        self.mediaList = mediaList
        self.coverUrl = coverUrl
        self.coverSize = coverSize
        self.scenicSpotId = scenicSpotId
        self.description = ""
        self.materialTag = materialTag
    }

    func encode(to encoder: Encoder) throws {
        var container = encoder.container(keyedBy: CodingKeys.self)
        try container.encodeIfPresent(id, forKey: .id)
        try container.encode(name, forKey: .name)
        try container.encode(type, forKey: .type)
        try container.encode(mediaType, forKey: .mediaType)
        try container.encode(mediaList, forKey: .mediaList)
        try container.encode(coverUrl, forKey: .coverUrl)
        try container.encode(coverSize, forKey: .coverSize)
        try container.encode(scenicSpotId, forKey: .scenicSpotId)
        try container.encode(description, forKey: .description)
        try container.encode(materialTag, forKey: .materialTag)
    }
}

/// 素材上传媒体项，对齐 Android `MediaItem`。
struct MaterialUploadMediaItem: Encodable, Sendable, Equatable {
    let originalName: String
    let ossUrl: String
    let size: Int64
    let fileWidthSize: MaterialUploadFileSize

    enum CodingKeys: String, CodingKey {
        case originalName = "original_name"
        case ossUrl = "oss_url"
        case size
        case fileWidthSize = "file_width_size"
    }
}

/// 素材上传文件宽高。
struct MaterialUploadFileSize: Encodable, Sendable, Equatable {
    let width: Int
    let height: Int
}

/// 上传页本地媒体项，不依赖 UIKit，供 ViewModel 管理上传状态。
struct MaterialUploadedMediaItem: Sendable, Equatable, Hashable, Identifiable {
    let id: String
    let data: Data
    let thumbnailData: Data?
    let previewURL: String?
    let fileName: String
    let size: Int64
    let width: Int
    let height: Int
    var ossUrl: String
    var isUploading: Bool
    var uploadProgress: Int

    init(
        id: String = UUID().uuidString,
        data: Data,
        thumbnailData: Data? = nil,
        previewURL: String? = nil,
        fileName: String,
        size: Int64? = nil,
        width: Int = 0,
        height: Int = 0,
        ossUrl: String = "",
        isUploading: Bool = false,
        uploadProgress: Int = 0
    ) {
        self.id = id
        self.data = data
        self.thumbnailData = thumbnailData
        self.previewURL = previewURL
        self.fileName = fileName
        self.size = size ?? Int64(data.count)
        self.width = width
        self.height = height
        self.ossUrl = ossUrl
        self.isUploading = isUploading
        self.uploadProgress = uploadProgress
    }
}

/// 素材上传进度弹窗状态。
struct MaterialUploadDialogState: Sendable, Equatable {
    let title: String
    let progress: Int
}

/// 素材 UI 展示格式化工具。
enum MaterialDisplayFormatter {
    /// 格式化计数，超过 1000 按 Android 规则显示 k。
    static func formatCount(_ count: Int) -> String {
        guard count >= 1000 else { return String(count) }
        let value = Double(count) / 1000.0
        if value.truncatingRemainder(dividingBy: 1) == 0 {
            return "\(Int(value))k"
        }
        return String(format: "%.1fk", value)
    }

    /// 格式化整数，增加千位分隔符。
    static func formatNumber(_ number: Int) -> String {
        let formatter = NumberFormatter()
        formatter.numberStyle = .decimal
        return formatter.string(from: NSNumber(value: number)) ?? String(number)
    }

    /// 审核状态文案。
    static func reviewStatusText(_ status: Int) -> String {
        switch status {
        case 1: "已通过"
        case 0: "待审核"
        case 2: "未通过"
        default: "未知"
        }
    }
}

private extension KeyedDecodingContainer {
    func decodeFlexibleString(forKey key: Key) throws -> String? {
        if let value = try decodeIfPresent(String.self, forKey: key) {
            return value
        }
        if let value = try decodeIfPresent(Int.self, forKey: key) {
            return String(value)
        }
        return nil
    }

    func decodeFlexibleInt64(forKey key: Key) throws -> Int64? {
        if let value = try decodeIfPresent(Int64.self, forKey: key) {
            return value
        }
        if let value = try decodeIfPresent(Int.self, forKey: key) {
            return Int64(value)
        }
        if let value = try decodeIfPresent(String.self, forKey: key) {
            return Int64(value)
        }
        return nil
    }
}

private extension String {
    var sxkNonEmpty: String? { isEmpty ? nil : self }
}