use super::*;
use fs::FakeFs;
use gpui::TestAppContext;
use project::{DisableAiSettings, ProjectGroupKey};
use serde_json::json;
use settings::SettingsStore;

fn init_test(cx: &mut TestAppContext) {
    cx.update(|cx| {
        let settings_store = SettingsStore::test(cx);
        cx.set_global(settings_store);
        theme_settings::init(theme::LoadThemes::JustBase, cx);
        DisableAiSettings::register(cx);
    });
}

#[gpui::test]
async fn test_sidebar_disabled_when_disable_ai_is_enabled(cx: &mut TestAppContext) {
    init_test(cx);
    let fs = FakeFs::new(cx.executor());
    let project = Project::test(fs, [], cx).await;

    let (multi_workspace, cx) =
        cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));

    multi_workspace.read_with(cx, |mw, cx| {
        assert!(mw.multi_workspace_enabled(cx));
    });

    multi_workspace.update_in(cx, |mw, _window, cx| {
        mw.open_sidebar(cx);
        assert!(mw.sidebar_open());
    });

    cx.update(|_window, cx| {
        DisableAiSettings::override_global(DisableAiSettings { disable_ai: true }, cx);
    });
    cx.run_until_parked();

    multi_workspace.read_with(cx, |mw, cx| {
        assert!(
            !mw.sidebar_open(),
            "Sidebar should be closed when disable_ai is true"
        );
        assert!(
            !mw.multi_workspace_enabled(cx),
            "Multi-workspace should be disabled when disable_ai is true"
        );
    });

    multi_workspace.update_in(cx, |mw, window, cx| {
        mw.toggle_sidebar(window, cx);
    });
    multi_workspace.read_with(cx, |mw, _cx| {
        assert!(
            !mw.sidebar_open(),
            "Sidebar should remain closed when toggled with disable_ai true"
        );
    });

    cx.update(|_window, cx| {
        DisableAiSettings::override_global(DisableAiSettings { disable_ai: false }, cx);
    });
    cx.run_until_parked();

    multi_workspace.read_with(cx, |mw, cx| {
        assert!(
            mw.multi_workspace_enabled(cx),
            "Multi-workspace should be enabled after re-enabling AI"
        );
        assert!(
            !mw.sidebar_open(),
            "Sidebar should still be closed after re-enabling AI (not auto-opened)"
        );
    });

    multi_workspace.update_in(cx, |mw, window, cx| {
        mw.toggle_sidebar(window, cx);
    });
    multi_workspace.read_with(cx, |mw, _cx| {
        assert!(
            mw.sidebar_open(),
            "Sidebar should open when toggled after re-enabling AI"
        );
    });
}

#[gpui::test]
async fn test_project_group_keys_initial(cx: &mut TestAppContext) {
    init_test(cx);
    let fs = FakeFs::new(cx.executor());
    fs.insert_tree("/root_a", json!({ "file.txt": "" })).await;
    let project = Project::test(fs, ["/root_a".as_ref()], cx).await;

    let expected_key = project.read_with(cx, |project, cx| project.project_group_key(cx));

    let (multi_workspace, cx) =
        cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));

    multi_workspace.update(cx, |mw, cx| {
        mw.open_sidebar(cx);
    });

    multi_workspace.read_with(cx, |mw, cx| {
        let keys: Vec<ProjectGroupKey> = mw.project_group_keys(cx);
        assert_eq!(keys.len(), 1, "should have exactly one key on creation");
        assert_eq!(keys[0], expected_key);
    });
}

#[gpui::test]
async fn test_project_group_keys_add_workspace(cx: &mut TestAppContext) {
    init_test(cx);
    let fs = FakeFs::new(cx.executor());
    fs.insert_tree("/root_a", json!({ "file.txt": "" })).await;
    fs.insert_tree("/root_b", json!({ "file.txt": "" })).await;
    let project_a = Project::test(fs.clone(), ["/root_a".as_ref()], cx).await;
    let project_b = Project::test(fs.clone(), ["/root_b".as_ref()], cx).await;

    let key_a = project_a.read_with(cx, |p, cx| p.project_group_key(cx));
    let key_b = project_b.read_with(cx, |p, cx| p.project_group_key(cx));
    assert_ne!(
        key_a, key_b,
        "different roots should produce different keys"
    );

    let (multi_workspace, cx) =
        cx.add_window_view(|window, cx| MultiWorkspace::test_new(project_a, window, cx));

    multi_workspace.update(cx, |mw, cx| {
        mw.open_sidebar(cx);
    });

    multi_workspace.read_with(cx, |mw, cx| {
        assert_eq!(mw.project_group_keys(cx).len(), 1);
    });

    // Adding a workspace with a different project root adds a new key.
    multi_workspace.update_in(cx, |mw, window, cx| {
        mw.test_add_workspace(project_b, window, cx);
    });

    multi_workspace.read_with(cx, |mw, cx| {
        let keys: Vec<ProjectGroupKey> = mw.project_group_keys(cx);
        assert_eq!(
            keys.len(),
            2,
            "should have two keys after adding a second workspace"
        );
        assert_eq!(keys[0], key_b);
        assert_eq!(keys[1], key_a);
    });
}

#[gpui::test]
async fn test_project_group_keys_duplicate_not_added(cx: &mut TestAppContext) {
    init_test(cx);
    let fs = FakeFs::new(cx.executor());
    fs.insert_tree("/root_a", json!({ "file.txt": "" })).await;
    let project_a = Project::test(fs.clone(), ["/root_a".as_ref()], cx).await;
    // A second project entity pointing at the same path produces the same key.
    let project_a2 = Project::test(fs.clone(), ["/root_a".as_ref()], cx).await;

    let key_a = project_a.read_with(cx, |p, cx| p.project_group_key(cx));
    let key_a2 = project_a2.read_with(cx, |p, cx| p.project_group_key(cx));
    assert_eq!(key_a, key_a2, "same root path should produce the same key");

    let (multi_workspace, cx) =
        cx.add_window_view(|window, cx| MultiWorkspace::test_new(project_a, window, cx));

    multi_workspace.update(cx, |mw, cx| {
        mw.open_sidebar(cx);
    });

    multi_workspace.update_in(cx, |mw, window, cx| {
        mw.test_add_workspace(project_a2, window, cx);
    });

    multi_workspace.read_with(cx, |mw, cx| {
        let keys: Vec<ProjectGroupKey> = mw.project_group_keys(cx);
        assert_eq!(
            keys.len(),
            1,
            "duplicate key should not be added when a workspace with the same root is inserted"
        );
    });
}

#[gpui::test]
async fn test_groups_with_same_paths_merge(cx: &mut TestAppContext) {
    init_test(cx);
    let fs = FakeFs::new(cx.executor());
    fs.insert_tree("/a", json!({ "file.txt": "" })).await;
    fs.insert_tree("/b", json!({ "file.txt": "" })).await;
    let project_a = Project::test(fs.clone(), ["/a".as_ref()], cx).await;
    let project_b = Project::test(fs.clone(), ["/b".as_ref()], cx).await;

    let (multi_workspace, cx) =
        cx.add_window_view(|window, cx| MultiWorkspace::test_new(project_a, window, cx));

    // Open the sidebar so workspaces get grouped.
    multi_workspace.update(cx, |mw, cx| {
        mw.open_sidebar(cx);
    });
    cx.run_until_parked();

    // Add a second workspace, creating group_b with path [/b].
    let group_a_id = multi_workspace.update_in(cx, |mw, window, cx| {
        let group_a_id = mw.project_groups()[0].read(cx).id;
        mw.test_add_workspace(project_b, window, cx);
        group_a_id
    });
    cx.run_until_parked();

    // Now add /b to group_a so it has [/a, /b].
    multi_workspace.update(cx, |mw, cx| {
        mw.add_folders_to_project_group(group_a_id, vec!["/b".into()], cx);
    });
    cx.run_until_parked();

    // Verify we have two groups.
    multi_workspace.read_with(cx, |mw, _cx| {
        assert_eq!(
            mw.project_groups().len(),
            2,
            "should have two groups before the merge"
        );
    });

    // Remove /a from group_a, making its key [/b] — same as group_b.
    multi_workspace.update(cx, |mw, cx| {
        mw.remove_folder_from_project_group(group_a_id, Path::new("/a"), cx);
    });
    cx.run_until_parked();

    // The two groups now have identical keys [/b] and should have been merged.
    multi_workspace.read_with(cx, |mw, _cx| {
        assert_eq!(
            mw.project_groups().len(),
            1,
            "groups with identical paths should be merged into one"
        );
    });
}