//
// Copyright 2022 New Vector Ltd
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

import SwiftUI

typealias BugReportViewModelType = StateStoreViewModel<BugReportViewState, BugReportViewAction>

class BugReportViewModel: BugReportViewModelType, BugReportViewModelProtocol {
    let bugReportService: BugReportServiceProtocol

    var callback: ((BugReportViewModelAction) -> Void)?

    init(bugReportService: BugReportServiceProtocol,
         screenshot: UIImage?,
         isModallyPresented: Bool) {
        self.bugReportService = bugReportService
        let bindings = BugReportViewStateBindings(reportText: "", sendingLogsEnabled: true)
        super.init(initialViewState: BugReportViewState(screenshot: screenshot,
                                                        bindings: bindings,
                                                        isModallyPresented: isModallyPresented))
    }

    // MARK: - Public

    override func process(viewAction: BugReportViewAction) async {
        switch viewAction {
        case .cancel:
            callback?(.cancel)
        case .submit:
            await submitBugReport()
        case .removeScreenshot:
            state.screenshot = nil
        }
    }
    
    // MARK: Private

    private func submitBugReport() async {
        let progressTracker = ProgressTracker()
        callback?(.submitStarted(progressTracker: progressTracker))
        do {
            let bugReport = BugReport(text: context.reportText,
                                      includeLogs: context.sendingLogsEnabled,
                                      includeCrashLog: true,
                                      githubLabels: [],
                                      files: [])
            let result = try await bugReportService.submitBugReport(bugReport,
                                                                    progressListener: progressTracker)
            MXLog.info("SubmitBugReport succeeded, result: \(result.reportUrl)")
            callback?(.submitFinished)
        } catch {
            MXLog.error("SubmitBugReport failed: \(error)")
            callback?(.submitFailed(error: error))
        }
    }
}