/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

import * as path from 'path';
import { createServer } from 'http-server';

import * as ts from 'vscode-chrome-debug-core-testsupport';

import * as testSetup from './testSetup';

suite('Stepping', () => {
    const DATA_ROOT = testSetup.DATA_ROOT;

    let dc: ts.ExtendedDebugClient;
    setup(() => {
        return testSetup.setup()
            .then(_dc => dc = _dc);
    });

    let server: any;
    teardown(() => {
        if (server) {
            server.close();
        }

        return testSetup.teardown();
    });

    suite('skipFiles', () => {
        test('when generated script is skipped via regex, the source can be un-skipped', async () => {
            const testProjectRoot = path.join(DATA_ROOT, 'calls-between-merged-files');
            const sourceA = path.join(testProjectRoot, 'sourceA.ts');
            const sourceB2 = path.join(testProjectRoot, 'sourceB2.ts');

            server = createServer({ root: testProjectRoot });
            server.listen(7890);

            const url = 'http://localhost:7890/index.html';

            // Skip the full B generated script via launch config
            const bpLineA = 6;
            const skipFiles = ['b.js'];
            await dc.hitBreakpointUnverified({ url, skipFiles, webRoot: testProjectRoot }, { path: sourceA, line: bpLineA });

            // Step in, verify B sources are skipped
            await dc.stepInRequest();
            await dc.assertStoppedLocation('step', { path: sourceA, line: 2 });
            await dc.send('toggleSkipFileStatus', { path: sourceB2 });

            // Continue back to sourceA, step in, should skip B1 and land on B2
            await dc.continueRequest();
            await dc.assertStoppedLocation('breakpoint', { path: sourceA, line: bpLineA });
            await dc.stepInRequest();
            await dc.assertStoppedLocation('step', { path: sourceB2, line: 2 });
        });

        test('when a non-sourcemapped script is skipped via regex, it can be unskipped', async () => {
            // Using this program, but run with sourcemaps disabled
            const testProjectRoot = path.join(DATA_ROOT, 'calls-between-sourcemapped-files');
            const sourceA = path.join(testProjectRoot, 'out/sourceA.js');
            const sourceB = path.join(testProjectRoot, 'out/sourceB.js');

            server = createServer({ root: testProjectRoot });
            server.listen(7890);

            const url = 'http://localhost:7890/index.html';

            // Skip the full B generated script via launch config
            const skipFiles = ['sourceB.js'];
            const bpLineA = 5;
            await dc.hitBreakpointUnverified({ url, sourceMaps: false, skipFiles, webRoot: testProjectRoot }, { path: sourceA, line: bpLineA });

            // Step in, verify B sources are skipped
            await dc.stepInRequest();
            await dc.assertStoppedLocation('step', { path: sourceA, line: 2 });
            await dc.send('toggleSkipFileStatus', { path: sourceB });

            // Continue back to A, step in, should land in B
            await dc.continueRequest();
            await dc.assertStoppedLocation('breakpoint', { path: sourceA, line: bpLineA });
            await dc.stepInRequest();
            await dc.assertStoppedLocation('step', { path: sourceB, line: 2 });
        });

        test('skip statuses for sourcemapped files are persisted across page reload', async () => {
            const testProjectRoot = path.join(DATA_ROOT, 'calls-between-merged-files');
            const sourceA = path.join(testProjectRoot, 'sourceA.ts');
            const sourceB2 = path.join(testProjectRoot, 'sourceB2.ts');

            server = createServer({ root: testProjectRoot });
            server.listen(7890);

            const url = 'http://localhost:7890/index.html';

            // Skip the full B generated script via launch config
            const bpLineA = 6;
            const skipFiles = ['b.js'];
            await dc.hitBreakpointUnverified({ url, skipFiles, webRoot: testProjectRoot }, { path: sourceA, line: bpLineA });
            await Promise.all([
                dc.stepInRequest(),
                dc.waitForEvent('stopped')
            ]);

            // Un-skip b2 and refresh the page
            await Promise.all([
                // Wait for extra pause event sent after toggling skip status
                dc.waitForEvent('stopped'),
                dc.send('toggleSkipFileStatus', { path: sourceB2 })
            ]);

            await Promise.all([
                dc.send('restart'),
                dc.assertStoppedLocation('breakpoint', { path: sourceA, line: bpLineA })
            ]);

            // Persisted bp should be hit. Step in, and assert we stepped through B1 into B2
            await Promise.all([
                dc.stepInRequest(),
                dc.assertStoppedLocation('step', { path: sourceB2, line: 2 })
            ]);
        });
    });
});