namespace Harness {
    export class FourSlashRunner extends RunnerBase {
        protected basePath: string;
        protected testSuiteName: TestRunnerKind;

        constructor(private testType: FourSlash.FourSlashTestType) {
            super();
            switch (testType) {
                case FourSlash.FourSlashTestType.Native:
                    this.basePath = "tests/cases/fourslash";
                    this.testSuiteName = "fourslash";
                    break;
                case FourSlash.FourSlashTestType.OH:
                    this.basePath = "tests/cases/fourslash/oh";
                    this.testSuiteName = "fourslash-oh";
                    break;
                case FourSlash.FourSlashTestType.Shims:
                    this.basePath = "tests/cases/fourslash/shims";
                    this.testSuiteName = "fourslash-shims";
                    break;
                case FourSlash.FourSlashTestType.ShimsWithPreprocess:
                    this.basePath = "tests/cases/fourslash/shims-pp";
                    this.testSuiteName = "fourslash-shims-pp";
                    break;
                case FourSlash.FourSlashTestType.Server:
                    this.basePath = "tests/cases/fourslash/server";
                    this.testSuiteName = "fourslash-server";
                    break;
                default:
                    throw ts.Debug.assertNever(testType);
            }
        }

        public enumerateTestFiles() {
            // see also: `enumerateTestFiles` in tests/webTestServer.ts
            return this.enumerateFiles(this.basePath, /\.ts/i, { recursive: false });
        }

        public kind() {
            return this.testSuiteName;
        }

        public initializeTests() {
            if (this.tests.length === 0) {
                this.tests = IO.enumerateTestFiles(this);
            }

            describe(this.testSuiteName + " tests", () => {
                this.tests.forEach(test => {
                    const file = typeof test === "string" ? test : test.file;
                    describe(file, () => {
                        let fn = ts.normalizeSlashes(file);
                        const justName = fn.replace(/^.*[\\\/]/, "");

                        // Convert to relative path
                        const testIndex = fn.indexOf("tests/");
                        if (testIndex >= 0) fn = fn.substr(testIndex);

                        if (justName !== "fourslash.ts") {
                            it(this.testSuiteName + " test " + justName + " runs correctly", () => {
                                FourSlash.runFourSlashTest(this.basePath, this.testType, fn);
                            });
                        }
                    });
                });
            });
        }
    }

    export class GeneratedFourslashRunner extends FourSlashRunner {
        constructor(testType: FourSlash.FourSlashTestType) {
            super(testType);
            this.basePath += "/generated/";
        }
    }
}