/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */

/**
 * Make sure that switching the displayed source in the UI works as advertised.
 */

const TAB_URL = EXAMPLE_URL + "doc_script-switching-01.html";

function test() {
  initDebugger(TAB_URL).then(([aTab,, aPanel]) => {
    const gTab = aTab;
    const gPanel = aPanel;
    const gDebugger = gPanel.panelWin;
    const gEditor = gDebugger.DebuggerView.editor;
    const gSources = gDebugger.DebuggerView.Sources;

    const gLabel1 = "code_script-switching-01.js";
    const gLabel2 = "code_script-switching-02.js";

    function testSourcesDisplay() {
      let deferred = promise.defer();

      is(gSources.itemCount, 2,
         "Found the expected number of sources.");

      is(gSources.items[0].target.querySelector(".dbg-source-item").getAttribute("tooltiptext"),
         EXAMPLE_URL + "code_script-switching-01.js",
         "The correct tooltip text is displayed for the first source.");
      is(gSources.items[1].target.querySelector(".dbg-source-item").getAttribute("tooltiptext"),
         EXAMPLE_URL + "code_script-switching-02.js",
         "The correct tooltip text is displayed for the second source.");

      ok(getSourceActor(gSources, EXAMPLE_URL + gLabel1),
         "First source url is incorrect.");
      ok(getSourceActor(gSources, EXAMPLE_URL + gLabel2),
         "Second source url is incorrect.");

      ok(gSources.getItemForAttachment(e => e.label == gLabel1),
         "First source label is incorrect.");
      ok(gSources.getItemForAttachment(e => e.label == gLabel2),
         "Second source label is incorrect.");

      ok(gSources.selectedItem,
         "There should be a selected item in the sources pane.");
      is(getSelectedSourceURL(gSources), EXAMPLE_URL + gLabel2,
         "The selected value is the sources pane is incorrect.");

      is(gEditor.getText().search(/firstCall/), -1,
         "The first source is not displayed.");
      is(gEditor.getText().search(/debugger/), 166,
         "The second source is displayed.");

      ok(gDebugger.document.title.endsWith(EXAMPLE_URL + gLabel2),
         "Title with second source is correct.");

      ok(isCaretPos(gPanel, 6),
         "Editor caret location is correct.");

      // The editor's debug location takes a tick to update.
      is(gEditor.getDebugLocation(), 5,
         "Editor debugger location is correct.");
      ok(gEditor.hasLineClass(5, "debug-line"),
         "The debugged line is highlighted appropriately (1).");

      waitForDebuggerEvents(gPanel, gDebugger.EVENTS.SOURCE_SHOWN).then(deferred.resolve);
      gSources.selectedIndex = 0;

      return deferred.promise;
    }

    function testSwitchPaused1() {
      let deferred = promise.defer();

      ok(gSources.selectedItem,
         "There should be a selected item in the sources pane.");
      is(getSelectedSourceURL(gSources), EXAMPLE_URL + gLabel1,
         "The selected value is the sources pane is incorrect.");

      is(gEditor.getText().search(/firstCall/), 118,
         "The first source is displayed.");
      is(gEditor.getText().search(/debugger/), -1,
         "The second source is not displayed.");

      // The editor's debug location takes a tick to update.
      ok(isCaretPos(gPanel, 1),
         "Editor caret location is correct.");
      is(gEditor.getDebugLocation(), null,
         "Editor debugger location is correct.");
      ok(!gEditor.hasLineClass(5, "debug-line"),
         "The debugged line highlight was removed.");

      waitForDebuggerEvents(gPanel, gDebugger.EVENTS.SOURCE_SHOWN).then(deferred.resolve);
      gSources.selectedIndex = 1;
      return deferred.promise;
    }

    function testSwitchPaused2() {
      let deferred = promise.defer();

      ok(gSources.selectedItem,
         "There should be a selected item in the sources pane.");
      is(getSelectedSourceURL(gSources), EXAMPLE_URL + gLabel2,
         "The selected value is the sources pane is incorrect.");

      is(gEditor.getText().search(/firstCall/), -1,
         "The first source is not displayed.");
      is(gEditor.getText().search(/debugger/), 166,
         "The second source is displayed.");

      ok(isCaretPos(gPanel, 1),
         "Editor caret location is correct.");
      is(gEditor.getDebugLocation(), 5,
         "Editor debugger location is correct.");
      ok(gEditor.hasLineClass(5, "debug-line"),
         "The debugged line is highlighted appropriately (2).");

      // Step out twice.
      waitForThreadEvents(gPanel, "paused").then(() => {
        waitForDebuggerEvents(gPanel, gDebugger.EVENTS.SOURCE_SHOWN).then(deferred.resolve);
        gDebugger.gThreadClient.stepOut();
      })
      gDebugger.gThreadClient.stepOut();

      return deferred.promise;
    }

    function testSwitchRunning() {
      ok(gSources.selectedItem,
         "There should be a selected item in the sources pane.");
      is(getSelectedSourceURL(gSources), EXAMPLE_URL + gLabel1,
         "The selected value is the sources pane is incorrect.");

      is(gEditor.getText().search(/firstCall/), 118,
         "The first source is displayed.");
      is(gEditor.getText().search(/debugger/), -1,
         "The second source is not displayed.");

      ok(isCaretPos(gPanel, 5),
         "Editor caret location is correct.");
      is(gEditor.getDebugLocation(), 4,
         "Editor debugger location is correct.");
      ok(gEditor.hasLineClass(4, "debug-line"),
         "The debugged line is highlighted appropriately (3).");
    }

    Task.spawn(function*() {
      yield waitForSourceShown(gPanel, "-01.js", 1);
      ok(gDebugger.document.title.endsWith(EXAMPLE_URL + gLabel1),
         "Title with first source is correct.");

      const shown = waitForSourceAndCaretAndScopes(gPanel, "-02.js", 1);
      callInTab(gTab, "firstCall");
      yield shown;

      yield testSourcesDisplay();
      yield testSwitchPaused1();
      yield testSwitchPaused2();
      yield testSwitchRunning();
      resumeDebuggerThenCloseAndFinish(gPanel);
    });
  });
}