import SwiftUI

struct BuildListView: View {

    @State private var model: BuildListViewModel

    init(client: GitbayClient, repo: String) {
        _model = State(initialValue: BuildListViewModel(client: client, repoPath: repo))
    }

    var body: some View {
        List {
            if let error = model.actionError {
                Section {
                    GBNotice(error, .gbWarn)
                }
            }
            ForEach(model.state.value ?? []) { build in
                NavigationLink(value: BuildRoute.detail(repo: model.repoPath, number: build.number)) {
                    BuildRow(build: build)
                }
            }
        }
        .overlay { LoadStateOverlay(state: model.state) }
        .navigationTitle("Builds")
        .navigationBarTitleDisplayMode(.inline)
        .toolbar {
            ToolbarItem(placement: .topBarTrailing) {
                // A menu of jobs, like the web's picker — not a name to
                // type. Nothing to trigger without a job file.
                Menu {
                    ForEach(model.jobs) { job in
                        Button("\(job.name) — \(job.trigger)") {
                            Task { await model.trigger(job: job.name) }
                        }
                    }
                } label: {
                    Image(systemName: "play.circle")
                }
                .disabled(model.working || model.jobs.isEmpty)
                .accessibilityIdentifier("build-trigger-button")
            }
        }
        .task {
            await model.load()
            await model.loadJobs()
        }
        .refreshable {
            await model.load()
            await model.loadJobs()
        }
    }
}

private struct BuildRow: View {
    let build: Build

    var body: some View {
        HStack(spacing: 10) {
            Image(systemName: build.statusIcon)
                .foregroundStyle(build.statusColor)
            VStack(alignment: .leading, spacing: 2) {
                Text("#\(build.number) \(build.job)")
                    .font(.gbSans(.subheadline).weight(.medium))
                HStack(spacing: 6) {
                    Text(build.ref)
                    Text(build.shortSHA)
                        .font(.gbMono(.caption))
                }
                .font(.gbSans(.caption))
                .foregroundStyle(.secondary)
            }
            Spacer()
            VStack(alignment: .trailing, spacing: 2) {
                Text(build.status)
                    .font(.gbSans(.caption).weight(.medium))
                    .foregroundStyle(build.statusColor)
                Text(build.createdAt, format: .relative(presentation: .named))
                    .font(.gbSans(.caption))
                    .foregroundStyle(.secondary)
            }
        }
        .padding(.vertical, 2)
    }

}

nonisolated enum BuildRoute: Hashable {
    case list(repo: String)
    case detail(repo: String, number: Int64)
}