import AppKit
import Path
import SwiftUI
import Version
import struct XCModel.Compilers
import struct XCModel.SDKs

struct InfoPane: View {
    let xcode: Xcode

    var body: some View {
        ScrollView {
            VStack(alignment: .leading, spacing: 16) {
                IconView(installState: xcode.installState)
                    .frame(maxWidth: .infinity, alignment: .center)

                Text(verbatim: "Xcode \(xcode.description) \(xcode.version.buildMetadataIdentifiersDisplay)")
                    .font(.title)

                InfoPaneControls(xcode: xcode)

                Divider()

                Group {
                    RuntimesView(xcode: xcode)
                    ReleaseDateView(date: xcode.releaseDate)
                    ReleaseNotesView(url: xcode.releaseNotesURL)
                    IdenticalBuildsView(builds: xcode.identicalBuilds)
                    CompatibilityView(requiredMacOSVersion: xcode.requiredMacOSVersion)
                    SDKsView(sdks: xcode.sdks)
                    CompilersView(compilers: xcode.compilers)
                }

                Spacer()
            }
        }
    }
}

#Preview(PreviewName.allCases[0].rawValue) { makePreviewContent(for: 0) }
#Preview(PreviewName.allCases[1].rawValue) { makePreviewContent(for: 1) }
#Preview(PreviewName.allCases[2].rawValue) { makePreviewContent(for: 2) }
#Preview(PreviewName.allCases[3].rawValue) { makePreviewContent(for: 3) }
#Preview(PreviewName.allCases[4].rawValue) { makePreviewContent(for: 4) }

private func makePreviewContent(for index: Int) -> some View {
  let name = PreviewName.allCases[index]
    return InfoPane(xcode: xcodeDict[name]!)
        .environmentObject(configure(AppState()) {
          $0.allXcodes = [xcodeDict[name]!]
        })
        .frame(width: 300, height: 400)
            .padding()
}

enum PreviewName: String, CaseIterable, Identifiable {
    case Populated_Installed_Selected
    case Populated_Installed_Unselected
    case Populated_Uninstalled
    case Basic_Installed
    case Basic_Installing

    var id: PreviewName { self }
}

var xcodeDict: [PreviewName: Xcode] = [
    .Populated_Installed_Selected: .init(
        version: _versionNoMeta,
        installState: .installed(Path(_path)!),
        selected: true,
        icon: NSWorkspace.shared.icon(forFile: _path),
        requiredMacOSVersion: _requiredMacOSVersion,
        releaseNotesURL: URL(string: "https://developer.apple.com/documentation/xcode-release-notes/xcode-12_3-release-notes/")!,
        releaseDate: Date(),
        sdks: _sdks,
        compilers: _compilers,
        downloadFileSize: _downloadFileSize
    ),
    .Populated_Installed_Unselected: .init(
        version: _versionNoMeta,
        installState: .installed(Path(_path)!),
        selected: false,
        icon: NSWorkspace.shared.icon(forFile: _path),
        sdks: _sdks,
        compilers: _compilers,
        downloadFileSize: _downloadFileSize
    ),
    .Populated_Uninstalled: .init(
        version: Version(major: 12, minor: 3, patch: 0),
        installState: .notInstalled,
        selected: false,
        icon: nil,
        sdks: _sdks,
        compilers: _compilers,
        downloadFileSize: _downloadFileSize
    ),
    .Basic_Installed: .init(
        version: _versionWithMeta,
        installState: .installed(Path(_path)!),
        selected: false,
        icon: nil,
        sdks: nil,
        compilers: nil
    ),
    .Basic_Installing: .init(
        version: _versionWithMeta,
        installState: .installing(.downloading(
            progress: configure(Progress()) {
                $0.kind = .file
                $0.fileOperationKind = .downloading
                $0.estimatedTimeRemaining = 123
                $0.totalUnitCount = 11_944_848_484
                $0.completedUnitCount = 848_444_920
                $0.throughput = 9_211_681
            }
        )),
        selected: false,
        icon: nil,
        sdks: nil,
        compilers: nil
    ),
]

private let _versionNoMeta = Version(major: 12, minor: 3, patch: 0)
private let _versionWithMeta = Version(major: 12, minor: 3, patch: 1, buildMetadataIdentifiers: ["1234A"])
private let _path = "/Applications/Xcode-12.3.0.app"
private let _requiredMacOSVersion = "10.15.4"
private let _sdks = SDKs(
    macOS: .init(number: "11.1"),
    iOS: .init(number: "14.3"),
    watchOS: .init(number: "7.3"),
    tvOS: .init(number: "14.3")
)
private let _compilers = Compilers(
    gcc: .init(number: "4"),
    llvm_gcc: .init(number: "213"),
    llvm: .init(number: "2.3"),
    clang: .init(number: "7.3"),
    swift: .init(number: "5.3.2")
)
private let _downloadFileSize: Int64 = 242_342_424