package editor

import (
	"testing"

	"git.gophernest.net/azpect/TextEditor/internal/action"
)

func TestDeleteChar(t *testing.T) {
	t.Run("test 'x' deletes character under cursor", func(t *testing.T) {
		lines := []string{"hello"}
		tm := newTestModelWithLines(t, lines)
		sendKeys(tm, "x")

		m := getFinalModel(t, tm)
		if m.lines[0] != "ello" {
			t.Errorf("lines[0] = %q, want 'ello'", m.lines[0])
		}
	})

	t.Run("test 'x' in middle of line", func(t *testing.T) {
		lines := []string{"hello"}
		tm := newTestModelWithLinesAndCursorPos(t, lines, action.Position{Col: 2, Line: 0})
		sendKeys(tm, "x")

		m := getFinalModel(t, tm)
		if m.lines[0] != "helo" {
			t.Errorf("lines[0] = %q, want 'helo'", m.lines[0])
		}
	})

	t.Run("test 'x' at end of line", func(t *testing.T) {
		lines := []string{"hello"}
		tm := newTestModelWithLinesAndCursorPos(t, lines, action.Position{Col: 4, Line: 0})
		sendKeys(tm, "x")

		m := getFinalModel(t, tm)
		if m.lines[0] != "hell" {
			t.Errorf("lines[0] = %q, want 'hell'", m.lines[0])
		}
	})

	t.Run("test 'xx' deletes two characters", func(t *testing.T) {
		lines := []string{"hello"}
		tm := newTestModelWithLines(t, lines)
		sendKeys(tm, "x", "x")

		m := getFinalModel(t, tm)
		if m.lines[0] != "llo" {
			t.Errorf("lines[0] = %q, want 'llo'", m.lines[0])
		}
	})
}

func TestDeleteCharWithCount(t *testing.T) {
	t.Run("test '3x' deletes three characters", func(t *testing.T) {
		lines := []string{"hello"}
		tm := newTestModelWithLines(t, lines)
		sendKeys(tm, "3", "x")

		m := getFinalModel(t, tm)
		if m.lines[0] != "lo" {
			t.Errorf("lines[0] = %q, want 'lo'", m.lines[0])
		}
	})

	t.Run("test '10x' with overflow", func(t *testing.T) {
		lines := []string{"hello"}
		tm := newTestModelWithLines(t, lines)
		sendKeys(tm, "1", "0", "x")

		m := getFinalModel(t, tm)
		if m.lines[0] != "" {
			t.Errorf("lines[0] = %q, want ''", m.lines[0])
		}
	})

	t.Run("test '2x' from middle", func(t *testing.T) {
		lines := []string{"hello"}
		tm := newTestModelWithLinesAndCursorPos(t, lines, action.Position{Col: 1, Line: 0})
		sendKeys(tm, "2", "x")

		m := getFinalModel(t, tm)
		if m.lines[0] != "hlo" {
			t.Errorf("lines[0] = %q, want 'hlo'", m.lines[0])
		}
	})
}