import SwiftUI

struct GenerationSettingsView: View {

    @Environment(\.language)
    private var language

    @EnvironmentObject
    private var content: Content

    @State
    private var isGeneratingWebsite = false

    @State
    private var generatorText: String = ""

    var body: some View {
        ScrollView {
            VStack(alignment: .leading) {
                Text("Website Generation")
                    .font(.largeTitle)
                    .bold()
                Text("Regenerate the website and monitor the output")
                    .padding(.bottom, 30)
                
                HStack {
                    Button(action: generateFeed) {
                        Text("Generate")
                    }
                    .disabled(isGeneratingWebsite)
                    if isGeneratingWebsite {
                        ProgressView()
                            .progressViewStyle(.circular)
                            .frame(height: 25)
                    }
                    Text(generatorText)
                    Spacer()
                }
            }
        }
    }

    private func generateFeed() {
        guard content.settings.outputDirectoryPath != "" else {
            print("Invalid output path")
            return
        }
        let url = URL(fileURLWithPath: content.settings.outputDirectoryPath)

        guard FileManager.default.fileExists(atPath: url.path) else {
            print("Missing output folder")
            return
        }
        isGeneratingWebsite = true
        DispatchQueue.global(qos: .userInitiated).async {
            let generator = WebsiteGenerator(
                content: content,
                language: language)
            _ = generator.generateWebsite { text in
                DispatchQueue.main.async {
                    self.generatorText = text
                }
            }
            DispatchQueue.main.async {
                isGeneratingWebsite = false
                self.generatorText = "Generation complete"
            }
        }
    }
}

#Preview {
    GenerationSettingsView()
        .environmentObject(Content.mock)
        .padding()
}