package handlers_test

import (
	"slices"
	"testing"

	"github.com/StevanFreeborn/term-tier/internal/handlers"
	"github.com/StevanFreeborn/term-tier/internal/state"
	tea "github.com/charmbracelet/bubbletea"
)

func TestNewQuitHandler(t *testing.T) {
	h := handlers.NewQuitHandler()

	if h.Description() != "Quit" {
		t.Errorf("Expected description 'Quit', got %q", h.Description())
	}

	keys := h.KeysHandled()

	if !slices.Contains(keys, "q") || !slices.Contains(keys, "ctrl+c") {
		t.Errorf("Expected keys ['q', 'ctrl+c'], got %v", keys)
	}
}

func TestQuitHandler_Match(t *testing.T) {
	h := handlers.NewQuitHandler()

	tests := []struct {
		name     string
		mode     state.Mode
		key      string
		expected bool
	}{
		{
			name:     "Matches 'q' in Navigation Mode",
			mode:     state.NavigationMode,
			key:      "q",
			expected: true,
		},
		{
			name:     "Matches 'ctrl+c' in Navigation Mode",
			mode:     state.NavigationMode,
			key:      "ctrl+c",
			expected: true,
		},
		{
			name:     "Ignores 'q' in Input Mode",
			mode:     state.InputMode,
			key:      "q",
			expected: false,
		},
		{
			name:     "Ignores 'ctrl+c' in Input Mode",
			mode:     state.InputMode,
			key:      "ctrl+c",
			expected: false,
		},
		{
			name:     "Ignores other keys in Navigation Mode",
			mode:     state.NavigationMode,
			key:      "x",
			expected: false,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			s := state.New(state.WithMode(tt.mode))
			msg := tea.KeyMsg{Type: tea.KeyRunes, Runes: []rune(tt.key)}

			if tt.key == "ctrl+c" {
				msg = tea.KeyMsg{Type: tea.KeyCtrlC}
			}

			if got := h.Match(s, msg); got != tt.expected {
				t.Errorf("Match() = %v, want %v", got, tt.expected)
			}
		})
	}
}

func TestQuitHandler_Handle(t *testing.T) {
	h := handlers.NewQuitHandler()
	s := state.New(state.WithMode(state.NavigationMode))

	msg := tea.KeyMsg{Type: tea.KeyRunes, Runes: []rune("q")}
	cmd := h.Handle(s, msg)

	if cmd == nil {
		t.Fatal("Expected Handle to return a command, got nil")
	}

	cmdMsg := cmd()

	if _, ok := cmdMsg.(tea.QuitMsg); !ok {
		t.Errorf("Expected command to produce tea.QuitMsg, got %T", cmdMsg)
	}
}