package parse

import (
	"testing"
)

func TestParseImageOSC_ValidFull(t *testing.T) {
	line := []byte("\033]9;image:path=/tmp/aerc-xxx/img0.png;alt=product photo\007")
	ref, ok := ParseImageOSC(line)
	if !ok {
		t.Fatal("expected successful parse")
	}
	if ref.Path != "/tmp/aerc-xxx/img0.png" {
		t.Errorf("path = %q, want /tmp/aerc-xxx/img0.png", ref.Path)
	}
	if ref.Alt != "product photo" {
		t.Errorf("alt = %q, want 'product photo'", ref.Alt)
	}
}

func TestParseImageOSC_PathOnly(t *testing.T) {
	line := []byte("\033]9;image:path=/tmp/img.jpg\007")
	ref, ok := ParseImageOSC(line)
	if !ok {
		t.Fatal("expected successful parse")
	}
	if ref.Path != "/tmp/img.jpg" {
		t.Errorf("path = %q, want /tmp/img.jpg", ref.Path)
	}
	if ref.Alt != "" {
		t.Errorf("alt = %q, want empty", ref.Alt)
	}
}

func TestParseImageOSC_EscBackslashTerminator(t *testing.T) {
	line := []byte("\033]9;image:path=/tmp/img.png\033\\")
	ref, ok := ParseImageOSC(line)
	if !ok {
		t.Fatal("expected successful parse with ESC\\ terminator")
	}
	if ref.Path != "/tmp/img.png" {
		t.Errorf("path = %q", ref.Path)
	}
}

func TestParseImageOSC_NoPath(t *testing.T) {
	line := []byte("\033]9;image:alt=just alt text\007")
	_, ok := ParseImageOSC(line)
	if ok {
		t.Error("expected failure when path is missing")
	}
}

func TestParseImageOSC_NotOSC9(t *testing.T) {
	line := []byte("Hello, this is plain text")
	_, ok := ParseImageOSC(line)
	if ok {
		t.Error("expected failure on plain text")
	}
}

func TestParseImageOSC_WrongOSCNumber(t *testing.T) {
	line := []byte("\033]8;image:path=/tmp/img.png\007")
	_, ok := ParseImageOSC(line)
	if ok {
		t.Error("expected failure on OSC 8 (not 9)")
	}
}

func TestParseImageOSC_EmptyPath(t *testing.T) {
	line := []byte("\033]9;image:path=\007")
	_, ok := ParseImageOSC(line)
	if ok {
		t.Error("expected failure on empty path")
	}
}

func TestParseImageOSC_MarkerEmbeddedInLine(t *testing.T) {
	line := []byte("prefix text \033]9;image:path=/tmp/img.png\007 suffix")
	ref, ok := ParseImageOSC(line)
	if !ok {
		t.Fatal("expected successful parse even with surrounding text")
	}
	if ref.Path != "/tmp/img.png" {
		t.Errorf("path = %q", ref.Path)
	}
}

func TestParseImageOSC_NoTerminator(t *testing.T) {
	line := []byte("\033]9;image:path=/tmp/img.png")
	_, ok := ParseImageOSC(line)
	if ok {
		t.Error("expected failure when no terminator present")
	}
}