import { findSchemeNames, findSchemePaths } from './Paths';
import { findSignableTargets, TargetType } from './Target';
import { getPbxproj, unquote } from './utils/Xcodeproj';
import { readXMLAsync } from '../utils/XML';

interface SchemeXML {
  Scheme?: {
    BuildAction?: {
      BuildActionEntries?: {
        BuildActionEntry?: BuildActionEntryType[];
      }[];
    }[];
    ArchiveAction?: {
      $?: {
        buildConfiguration?: string;
      };
    }[];
  };
}

interface BuildActionEntryType {
  BuildableReference?: {
    $?: {
      BlueprintName?: string;
      BuildableName?: string;
    };
  }[];
}

export function getSchemesFromXcodeproj(projectRoot: string): string[] {
  return findSchemeNames(projectRoot);
}

export function getRunnableSchemesFromXcodeproj(
  projectRoot: string,
  { configuration = 'Debug' }: { configuration?: 'Debug' | 'Release' } = {}
): { name: string; osType: string; type: string }[] {
  const project = getPbxproj(projectRoot);

  return findSignableTargets(project).map(([, target]) => {
    let osType = 'iOS';
    const type = unquote(target.productType);

    if (type === TargetType.WATCH) {
      osType = 'watchOS';
    } else if (
      // (apps) com.apple.product-type.application
      // (app clips) com.apple.product-type.application.on-demand-install-capable
      // NOTE(EvanBacon): This matches against `watchOS` as well so we check for watch first.
      type.startsWith(TargetType.APPLICATION)
    ) {
      // Attempt to resolve the platform SDK for each target so we can filter devices.
      const xcConfigurationList =
        project.hash.project.objects.XCConfigurationList[target.buildConfigurationList];

      if (xcConfigurationList) {
        const buildConfiguration =
          xcConfigurationList.buildConfigurations.find(
            (value: { comment: string; value: string }) => value.comment === configuration
          ) || xcConfigurationList.buildConfigurations[0];
        if (buildConfiguration?.value) {
          const xcBuildConfiguration =
            project.hash.project.objects.XCBuildConfiguration?.[buildConfiguration.value];

          const buildSdkRoot = xcBuildConfiguration.buildSettings.SDKROOT;
          if (
            buildSdkRoot === 'appletvos' ||
            'TVOS_DEPLOYMENT_TARGET' in xcBuildConfiguration.buildSettings
          ) {
            // Is a TV app...
            osType = 'tvOS';
          } else if (buildSdkRoot === 'iphoneos') {
            osType = 'iOS';
          }
        }
      }
    }

    return {
      name: unquote(target.name),
      osType,
      type: unquote(target.productType),
    };
  });
}

async function readSchemeAsync(
  projectRoot: string,
  scheme: string
): Promise<SchemeXML | undefined> {
  const allSchemePaths = findSchemePaths(projectRoot);
  const re = new RegExp(`/${scheme}.xcscheme`, 'i');
  const schemePath = allSchemePaths.find((i) => re.exec(i));
  if (schemePath) {
    return (await readXMLAsync({ path: schemePath })) as unknown as SchemeXML | undefined;
  } else {
    throw new Error(`scheme '${scheme}' does not exist, make sure it's marked as shared`);
  }
}

export async function getApplicationTargetNameForSchemeAsync(
  projectRoot: string,
  scheme: string
): Promise<string> {
  const schemeXML = await readSchemeAsync(projectRoot, scheme);
  const buildActionEntry =
    schemeXML?.Scheme?.BuildAction?.[0]?.BuildActionEntries?.[0]?.BuildActionEntry;
  const targetName =
    buildActionEntry?.length === 1
      ? getBlueprintName(buildActionEntry[0])
      : getBlueprintName(
          buildActionEntry?.find((entry) => {
            return entry.BuildableReference?.[0]?.['$']?.BuildableName?.endsWith('.app');
          })
        );
  if (!targetName) {
    throw new Error(`${scheme}.xcscheme seems to be corrupted`);
  }
  return targetName;
}

export async function getArchiveBuildConfigurationForSchemeAsync(
  projectRoot: string,
  scheme: string
): Promise<string> {
  const schemeXML = await readSchemeAsync(projectRoot, scheme);
  const buildConfiguration = schemeXML?.Scheme?.ArchiveAction?.[0]?.['$']?.buildConfiguration;
  if (!buildConfiguration) {
    throw new Error(`${scheme}.xcscheme seems to be corrupted`);
  }
  return buildConfiguration;
}

function getBlueprintName(entry?: BuildActionEntryType): string | undefined {
  return entry?.BuildableReference?.[0]?.['$']?.BlueprintName;
}