use ratatui::{Terminal, backend::TestBackend, widgets::Paragraph};
use ui_agregator::app::Tab;
use ui_agregator::data::{Album, AlbumStatus, Artist, MonitorState, Track};
use ui_agregator::ui::library::{
    LibraryFocus, LibraryState, render_albums_list, render_artist_header, render_artists_pane,
    render_detail_pane, render_library, render_tracks_list,
};
use ui_agregator::ui::modals::render_help_modal;
use ui_agregator::ui::progress_bar::progress_bar;
use ui_agregator::ui::topbar::render_topbar;

fn test_artists() -> Vec<Artist> {
    vec![
        Artist {
            id: "1".to_string(),
            name: "Radiohead".to_string(),
            country: "UK".to_string(),
            genres: vec!["Alternative".to_string()],
            monitor_state: MonitorState::Monitored,
            path: "/music/Radiohead".to_string(),
            quality: "FLAC".to_string(),
            size_gb: 2.5,
            albums: vec![
                Album {
                    id: "a1".to_string(),
                    title: "OK Computer".to_string(),
                    year: 1997,
                    album_type: "Album".to_string(),
                    monitored: true,
                    total: 12,
                    have: 12,
                    quality: "FLAC".to_string(),
                    status: AlbumStatus::Complete,
                },
                Album {
                    id: "a2".to_string(),
                    title: "Kid A".to_string(),
                    year: 2000,
                    album_type: "Album".to_string(),
                    monitored: true,
                    total: 10,
                    have: 5,
                    quality: "FLAC".to_string(),
                    status: AlbumStatus::Partial,
                },
            ],
        },
        Artist {
            id: "2".to_string(),
            name: "Pink Floyd".to_string(),
            country: "UK".to_string(),
            genres: vec!["Progressive Rock".to_string()],
            monitor_state: MonitorState::Monitored,
            path: "/music/Pink Floyd".to_string(),
            quality: "FLAC".to_string(),
            size_gb: 5.2,
            albums: vec![Album {
                id: "a3".to_string(),
                title: "The Dark Side of the Moon".to_string(),
                year: 1973,
                album_type: "Album".to_string(),
                monitored: true,
                total: 10,
                have: 0,
                quality: "—".to_string(),
                status: AlbumStatus::Wanted,
            }],
        },
    ]
}

fn test_tracks() -> Vec<Track> {
    vec![
        Track {
            id: "t1".to_string(),
            number: 1,
            disc: 1,
            title: "Airbag".to_string(),
            duration: "4:44".to_string(),
            have: true,
            quality: "FLAC".to_string(),
        },
        Track {
            id: "t2".to_string(),
            number: 2,
            disc: 1,
            title: "Paranoid Android".to_string(),
            duration: "6:23".to_string(),
            have: true,
            quality: "FLAC".to_string(),
        },
        Track {
            id: "t3".to_string(),
            number: 3,
            disc: 1,
            title: "Subterranean Homesick Alien".to_string(),
            duration: "4:27".to_string(),
            have: false,
            quality: "—".to_string(),
        },
    ]
}

mod progress_bar_snapshots {
    use super::*;

    #[test]
    fn complete() {
        let mut terminal = Terminal::new(TestBackend::new(12, 1)).unwrap();
        terminal
            .draw(|f| {
                let bar = progress_bar(10, 10, 10, AlbumStatus::Complete);
                f.render_widget(Paragraph::new(bar), f.area());
            })
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }

    #[test]
    fn partial() {
        let mut terminal = Terminal::new(TestBackend::new(12, 1)).unwrap();
        terminal
            .draw(|f| {
                let bar = progress_bar(5, 10, 10, AlbumStatus::Partial);
                f.render_widget(Paragraph::new(bar), f.area());
            })
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }

    #[test]
    fn empty() {
        let mut terminal = Terminal::new(TestBackend::new(12, 1)).unwrap();
        terminal
            .draw(|f| {
                let bar = progress_bar(0, 10, 10, AlbumStatus::Wanted);
                f.render_widget(Paragraph::new(bar), f.area());
            })
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }
}

mod topbar_snapshots {
    use super::*;

    #[test]
    fn library_active() {
        let mut terminal = Terminal::new(TestBackend::new(100, 1)).unwrap();
        terminal
            .draw(|f| {
                render_topbar(f, f.area(), Tab::Library, 0, 0, 0, false);
            })
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }

    #[test]
    fn with_badges() {
        let mut terminal = Terminal::new(TestBackend::new(100, 1)).unwrap();
        terminal
            .draw(|f| {
                render_topbar(f, f.area(), Tab::Queue, 5, 12, 3, false);
            })
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }

    #[test]
    fn notifications_open() {
        let mut terminal = Terminal::new(TestBackend::new(100, 1)).unwrap();
        terminal
            .draw(|f| {
                render_topbar(f, f.area(), Tab::Library, 0, 0, 5, true);
            })
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }
}

mod help_modal_snapshots {
    use super::*;

    #[test]
    fn normal_viewport() {
        let mut terminal = Terminal::new(TestBackend::new(100, 30)).unwrap();
        terminal
            .draw(|f| {
                render_help_modal(f, f.area());
            })
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }

    #[test]
    fn small_viewport() {
        let mut terminal = Terminal::new(TestBackend::new(60, 20)).unwrap();
        terminal
            .draw(|f| {
                render_help_modal(f, f.area());
            })
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }
}

mod library_page_snapshots {
    use super::*;

    #[test]
    fn full_page_empty() {
        let mut terminal = Terminal::new(TestBackend::new(100, 30)).unwrap();
        let mut state = LibraryState::new(vec![]);
        terminal
            .draw(|f| render_library(f, f.area(), &mut state))
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }

    #[test]
    fn full_page_with_data() {
        let mut terminal = Terminal::new(TestBackend::new(100, 30)).unwrap();
        let mut state = LibraryState::new(test_artists());
        terminal
            .draw(|f| render_library(f, f.area(), &mut state))
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }
}

mod artists_pane_snapshots {
    use super::*;

    #[test]
    fn empty() {
        let mut terminal = Terminal::new(TestBackend::new(32, 20)).unwrap();
        let mut state = LibraryState::new(vec![]);
        terminal
            .draw(|f| render_artists_pane(f, f.area(), &mut state))
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }

    #[test]
    fn with_artists_focused() {
        let mut terminal = Terminal::new(TestBackend::new(32, 20)).unwrap();
        let mut state = LibraryState::new(test_artists());
        state.focus = LibraryFocus::Artists;
        terminal
            .draw(|f| render_artists_pane(f, f.area(), &mut state))
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }

    #[test]
    fn with_artists_unfocused() {
        let mut terminal = Terminal::new(TestBackend::new(32, 20)).unwrap();
        let mut state = LibraryState::new(test_artists());
        state.focus = LibraryFocus::Albums;
        terminal
            .draw(|f| render_artists_pane(f, f.area(), &mut state))
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }
}

mod artist_header_snapshots {
    use super::*;

    #[test]
    fn monitored_artist() {
        let mut terminal = Terminal::new(TestBackend::new(68, 6)).unwrap();
        let artists = test_artists();
        terminal
            .draw(|f| render_artist_header(f, f.area(), &artists[0]))
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }

    #[test]
    fn unmonitored_artist() {
        let mut terminal = Terminal::new(TestBackend::new(68, 6)).unwrap();
        let artist = Artist {
            id: "3".to_string(),
            name: "Tool".to_string(),
            country: "US".to_string(),
            genres: vec!["Progressive Metal".to_string()],
            monitor_state: MonitorState::Unmonitored,
            path: "/music/Tool".to_string(),
            quality: "FLAC".to_string(),
            size_gb: 3.8,
            albums: vec![],
        };
        terminal
            .draw(|f| render_artist_header(f, f.area(), &artist))
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }
}

mod albums_list_snapshots {
    use super::*;
    use ratatui::widgets::ListState;

    #[test]
    fn with_albums_focused() {
        let mut terminal = Terminal::new(TestBackend::new(68, 10)).unwrap();
        let artists = test_artists();
        let albums = &artists[0].albums;
        let mut album_state = ListState::default();
        album_state.select(Some(0));
        terminal
            .draw(|f| {
                render_albums_list(f, f.area(), albums, LibraryFocus::Albums, &mut album_state);
            })
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }

    #[test]
    fn with_albums_unfocused() {
        let mut terminal = Terminal::new(TestBackend::new(68, 10)).unwrap();
        let artists = test_artists();
        let albums = &artists[0].albums;
        let mut album_state = ListState::default();
        album_state.select(Some(0));
        terminal
            .draw(|f| {
                render_albums_list(f, f.area(), albums, LibraryFocus::Artists, &mut album_state);
            })
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }

    #[test]
    fn mixed_statuses() {
        let mut terminal = Terminal::new(TestBackend::new(68, 10)).unwrap();
        let albums = vec![
            Album {
                id: "1".to_string(),
                title: "Complete Album".to_string(),
                year: 2020,
                album_type: "Album".to_string(),
                monitored: true,
                total: 10,
                have: 10,
                quality: "FLAC".to_string(),
                status: AlbumStatus::Complete,
            },
            Album {
                id: "2".to_string(),
                title: "Wanted Album".to_string(),
                year: 2021,
                album_type: "Album".to_string(),
                monitored: true,
                total: 8,
                have: 0,
                quality: "—".to_string(),
                status: AlbumStatus::Wanted,
            },
            Album {
                id: "3".to_string(),
                title: "Unmonitored Single".to_string(),
                year: 2022,
                album_type: "Single".to_string(),
                monitored: false,
                total: 1,
                have: 0,
                quality: "—".to_string(),
                status: AlbumStatus::Unmonitored,
            },
        ];
        let mut album_state = ListState::default();
        album_state.select(Some(1));
        terminal
            .draw(|f| {
                render_albums_list(f, f.area(), &albums, LibraryFocus::Albums, &mut album_state);
            })
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }
}

mod tracks_list_snapshots {
    use super::*;

    #[test]
    fn no_tracks() {
        let mut terminal = Terminal::new(TestBackend::new(68, 8)).unwrap();
        let mut state = LibraryState::new(test_artists());
        terminal
            .draw(|f| render_tracks_list(f, f.area(), &mut state))
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }

    #[test]
    fn with_tracks_focused() {
        let mut terminal = Terminal::new(TestBackend::new(68, 8)).unwrap();
        let mut state = LibraryState::new(test_artists());
        state.tracks = test_tracks();
        state.focus = LibraryFocus::Tracks;
        terminal
            .draw(|f| render_tracks_list(f, f.area(), &mut state))
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }

    #[test]
    fn with_tracks_unfocused() {
        let mut terminal = Terminal::new(TestBackend::new(68, 8)).unwrap();
        let mut state = LibraryState::new(test_artists());
        state.tracks = test_tracks();
        state.focus = LibraryFocus::Artists;
        terminal
            .draw(|f| render_tracks_list(f, f.area(), &mut state))
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }
}

mod detail_pane_snapshots {
    use super::*;

    #[test]
    fn no_artist_selected() {
        let mut terminal = Terminal::new(TestBackend::new(68, 24)).unwrap();
        let mut state = LibraryState::new(vec![]);
        terminal
            .draw(|f| render_detail_pane(f, f.area(), &mut state))
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }

    #[test]
    fn with_artist_albums_focused() {
        let mut terminal = Terminal::new(TestBackend::new(68, 24)).unwrap();
        let mut state = LibraryState::new(test_artists());
        state.focus = LibraryFocus::Albums;
        terminal
            .draw(|f| render_detail_pane(f, f.area(), &mut state))
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }

    #[test]
    fn with_artist_tracks_focused() {
        let mut terminal = Terminal::new(TestBackend::new(68, 24)).unwrap();
        let mut state = LibraryState::new(test_artists());
        state.tracks = test_tracks();
        state.focus = LibraryFocus::Tracks;
        terminal
            .draw(|f| render_detail_pane(f, f.area(), &mut state))
            .unwrap();
        insta::assert_snapshot!(terminal.backend());
    }
}

mod library_state_tests {
    use super::*;

    #[test]
    fn navigation() {
        let mut state = LibraryState::new(test_artists());

        assert_eq!(state.selected_artist_index(), Some(0));
        assert_eq!(state.focus, LibraryFocus::Artists);

        state.move_down();
        assert_eq!(state.selected_artist_index(), Some(1));

        state.focus_right();
        assert_eq!(state.focus, LibraryFocus::Albums);

        state.focus_left();
        assert_eq!(state.focus, LibraryFocus::Artists);
    }

    #[test]
    fn cycle_focus() {
        let mut state = LibraryState::new(test_artists());

        assert_eq!(state.focus, LibraryFocus::Artists);
        state.cycle_focus();
        assert_eq!(state.focus, LibraryFocus::Albums);
        state.cycle_focus();
        assert_eq!(state.focus, LibraryFocus::Tracks);
        state.cycle_focus();
        assert_eq!(state.focus, LibraryFocus::Artists);
    }
}