import Foundation
import XuqmCoreSDK

/// 日志上传器
final class LogUploader {

    private let appKey: String
    private let encoder: JSONEncoder = {
        let e = JSONEncoder()
        e.dateEncodingStrategy = .iso8601
        return e
    }()

    init(appKey: String) {
        self.appKey = appKey
    }

    /// 上传 Issue 事件
    func uploadIssues(_ issues: [IssueEvent], completion: ((Bool) -> Void)? = nil) {
        let baseURL = SDKEndpoints.bugCollectApiURL ?? SDKEndpoints.apiBaseURL
        guard let url = URL(string: "\(baseURL)/bugcollect/v1/issues/batch") else {
            completion?(false)
            return
        }

        let body: [String: Any] = [
            "sentAt": ISO8601DateFormatter().string(from: Date()),
            "sdk": ["name": "bugcollect.ios", "version": "1.0.0"],
            "events": issues.map { issue in
                var event: [String: Any] = [
                    "type": "issue",
                    "level": issue.level,
                    "platform": issue.platform,
                    "fingerprint": issue.fingerprint,
                    "appKey": issue.appKey,
                    "release": issue.release,
                    "environment": issue.environment
                ]
                if let exception = issue.exception {
                    event["exception"] = [
                        "type": exception.type,
                        "value": exception.value,
                        "stacktrace": exception.stacktrace ?? ""
                    ]
                }
                if let userId = issue.userId {
                    event["userId"] = userId
                }
                if let user = issue.user {
                    event["user"] = ["id": user.id]
                }
                if let device = issue.device {
                    event["device"] = [
                        "model": device.model,
                        "manufacturer": device.manufacturer,
                        "osName": device.osName,
                        "osVersion": device.osVersion,
                        "locale": device.locale,
                        "timezone": device.timezone,
                        "isEmulator": device.isEmulator,
                        "freeMemoryMb": device.freeMemoryMb,
                        "buildType": device.buildType
                    ]
                }
                return event
            }
        ]

        upload(url: url, body: body, completion: completion)
    }

    /// 上传日志事件
    func uploadEvents(_ events: [LogEvent], completion: ((Bool) -> Void)? = nil) {
        let baseURL = SDKEndpoints.bugCollectApiURL ?? SDKEndpoints.apiBaseURL
        guard let url = URL(string: "\(baseURL)/bugcollect/v1/events/batch") else {
            completion?(false)
            return
        }

        let body: [String: Any] = [
            "sentAt": ISO8601DateFormatter().string(from: Date()),
            "sdk": ["name": "bugcollect.ios", "version": "1.0.0"],
            "events": events.map { event in
                var dict: [String: Any] = [
                    "type": "event",
                    "name": event.name,
                    "appKey": event.appKey,
                    "userId": event.userId,
                    "platform": event.platform,
                    "release": event.release,
                    "environment": event.environment
                ]
                if let props = event.properties {
                    dict["properties"] = props.mapValues { $0.value }
                }
                return dict
            }
        ]

        upload(url: url, body: body, completion: completion)
    }

    private func upload(url: URL, body: [String: Any], completion: ((Bool) -> Void)?) {
        var request = URLRequest(url: url)
        request.httpMethod = "POST"
        request.setValue("application/json", forHTTPHeaderField: "Content-Type")

        // 添加认证 token
        if let token = XuqmSDK.shared.token {
            request.setValue("Bearer \(token)", forHTTPHeaderField: "Authorization")
        }

        do {
            request.httpBody = try JSONSerialization.data(withJSONObject: body)
        } catch {
            completion?(false)
            return
        }

        URLSession.shared.dataTask(with: request) { _, response, error in
            let success = error == nil &&
                (response as? HTTPURLResponse)?.statusCode ?? 0 < 400
            completion?(success)
        }.resume()
    }
}