use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};

use crate::app::View;

pub enum Action {
    Quit,
    NavigateUp,
    NavigateDown,
    NavigateLeft,
    NavigateRight,
    Select,
    Back,
    Search,
    Import,
    Delete,
    DeleteSelected,
    Open,
    TagView,
    CollectionView,
    AuditView,
    SettingsView,
    DuplicatesView,
    DatabaseView,
    QueueView,
    StatisticsView,
    TasksView,
    ScanTrigger,
    Refresh,
    NextTab,
    PrevTab,
    PageUp,
    PageDown,
    GoTop,
    GoBottom,
    CreateTag,
    TagMedia,
    UntagMedia,
    Help,
    Edit,
    Vacuum,
    Toggle,
    RunNow,
    Save,
    Char(char),
    Backspace,
    None,
}

pub fn handle_key(key: KeyEvent, in_input_mode: bool, current_view: &View) -> Action {
    if in_input_mode {
        match (key.code, key.modifiers) {
            (KeyCode::Esc, _) => Action::Back,
            (KeyCode::Enter, _) => Action::Select,
            (KeyCode::Char('s'), KeyModifiers::CONTROL) => match current_view {
                View::MetadataEdit => Action::Save,
                _ => Action::Select,
            },
            (KeyCode::Char(c), _) => Action::Char(c),
            (KeyCode::Backspace, _) => Action::Backspace,
            _ => Action::None,
        }
    } else {
        match (key.code, key.modifiers) {
            (KeyCode::Char('q'), _) | (KeyCode::Char('c'), KeyModifiers::CONTROL) => Action::Quit,
            (KeyCode::Up | KeyCode::Char('k'), _) => Action::NavigateUp,
            (KeyCode::Down | KeyCode::Char('j'), _) => Action::NavigateDown,
            (KeyCode::Left | KeyCode::Char('h'), _) => Action::NavigateLeft,
            (KeyCode::Right | KeyCode::Char('l'), _) => Action::NavigateRight,
            (KeyCode::Home, _) => Action::GoTop,
            (KeyCode::End, _) => Action::GoBottom,
            (KeyCode::Enter, _) => Action::Select,
            (KeyCode::Esc, _) => Action::Back,
            (KeyCode::Char('/'), _) => Action::Search,
            (KeyCode::Char('?'), _) => Action::Help,
            (KeyCode::Char('i'), _) => Action::Import,
            (KeyCode::Char('d'), _) => match current_view {
                View::Tags | View::Collections => Action::DeleteSelected,
                _ => Action::Delete,
            },
            (KeyCode::Char('o'), _) => Action::Open,
            (KeyCode::Char('e'), _) => match current_view {
                View::Detail => Action::Edit,
                _ => Action::None,
            },
            (KeyCode::Char('t'), _) => match current_view {
                View::Tasks => Action::Toggle,
                _ => Action::TagView,
            },
            (KeyCode::Char('c'), _) => Action::CollectionView,
            (KeyCode::Char('a'), _) => Action::AuditView,
            (KeyCode::Char('S'), _) => Action::SettingsView,
            (KeyCode::Char('D'), _) => Action::DuplicatesView,
            (KeyCode::Char('B'), _) => Action::DatabaseView,
            (KeyCode::Char('Q'), _) => Action::QueueView,
            (KeyCode::Char('X'), _) => Action::StatisticsView,
            (KeyCode::Char('T'), _) => Action::TasksView,
            // Ctrl+S must come before plain 's' to ensure proper precedence
            (KeyCode::Char('s'), KeyModifiers::CONTROL) => match current_view {
                View::MetadataEdit => Action::Save,
                _ => Action::None,
            },
            (KeyCode::Char('s'), _) => Action::ScanTrigger,
            (KeyCode::Char('r'), _) => Action::Refresh,
            (KeyCode::Char('n'), _) => Action::CreateTag,
            (KeyCode::Char('+'), _) => Action::TagMedia,
            (KeyCode::Char('-'), _) => Action::UntagMedia,
            (KeyCode::Char('v'), _) => match current_view {
                View::Database => Action::Vacuum,
                _ => Action::None,
            },
            (KeyCode::Char('x'), _) => match current_view {
                View::Tasks => Action::RunNow,
                _ => Action::None,
            },
            (KeyCode::Tab, _) => Action::NextTab,
            (KeyCode::BackTab, _) => Action::PrevTab,
            (KeyCode::PageUp, _) => Action::PageUp,
            (KeyCode::PageDown, _) => Action::PageDown,
            _ => Action::None,
        }
    }
}