85 lines
3.3 KiB
Swift
85 lines
3.3 KiB
Swift
import Foundation
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/// ANI 转换接口错误。
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struct AniConverterError: LocalizedError {
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let message: String
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var errorDescription: String? { message }
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}
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/// 将源视频转换为设备可用的 ANI 文件。
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///
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/// 接口定义详见 duooomi-ble-sdk/CLAUDE.md 的"外部依赖 > ANI 转换 API"。
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/// 除 `videoUrl` 外，`width / height / fps` 全部固定写死，不得暴露为可调参数。
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enum AniConverter {
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private static let endpoint = URL(string: "https://api.mixvideo.bowong.cc/api/auth/loomart/file/convert-to-ani")!
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/// 专用 session：延长超时，避免 ANI 转换耗时长被空闲连接关闭（-1005）。
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private static let session: URLSession = {
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let config = URLSessionConfiguration.default
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config.timeoutIntervalForRequest = 120
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config.timeoutIntervalForResource = 180
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config.waitsForConnectivity = true
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return URLSession(configuration: config)
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}()
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/// 调用 ANI 转换接口，返回 ani 文件的 CDN URL。
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/// - Parameter videoUrl: 源视频的公网 URL。
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/// - Returns: 转换后 ani 文件的 CDN URL。
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/// - Throws: 网络异常、服务返回失败或响应解析失败等错误。
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/// - Note: 遇到 -1005（连接丢失）时自动重试一次。
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static func convert(videoUrl: String) async throws -> String {
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do {
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return try await performConvert(videoUrl: videoUrl)
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} catch let error as NSError where error.code == NSURLErrorNetworkConnectionLost {
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// -1005 重试一次
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return try await performConvert(videoUrl: videoUrl)
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}
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}
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/// 实际执行转换请求。
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/// - Parameter videoUrl: 源视频 URL。
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/// - Returns: ani 文件 URL。
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/// - Throws: 各类网络或业务错误。
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private static func performConvert(videoUrl: String) async throws -> String {
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var request = URLRequest(url: endpoint)
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request.httpMethod = "POST"
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request.setValue("application/json", forHTTPHeaderField: "content-type")
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request.setValue(NetworkConfig.apiKey, forHTTPHeaderField: "x-api-key")
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request.timeoutInterval = 120
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let body: [String: Any] = [
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"videoUrl": videoUrl,
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"width": 360,
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"height": 360,
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"fps": "24",
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]
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request.httpBody = try JSONSerialization.data(withJSONObject: body)
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let (data, response) = try await session.data(for: request)
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if let http = response as? HTTPURLResponse, !(200..<300).contains(http.statusCode) {
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throw AniConverterError(message: "HTTP \(http.statusCode)")
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}
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guard let json = try JSONSerialization.jsonObject(with: data) as? [String: Any] else {
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throw AniConverterError(message: "Invalid JSON response")
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}
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guard (json["success"] as? Bool) == true,
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let outer = json["data"] as? [String: Any] else {
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throw AniConverterError(message: "ANI API reported failure")
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}
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if (outer["status"] as? Bool) != true {
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let msg = (outer["msg"] as? String) ?? "ANI conversion failed"
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throw AniConverterError(message: msg)
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}
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guard let aniUrl = outer["data"] as? String, !aniUrl.isEmpty else {
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throw AniConverterError(message: "Missing ani url in response")
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}
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return aniUrl
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}
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}
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