package textextraction

import "testing"

func TestParseTextExtractionAcceptsItems(t *testing.T) {
	extraction, err := parseTextExtraction(`{
		"items": [
			{
				"text": "新品上市",
				"x": 0.2,
				"y": 0.3,
				"width": 0.4,
				"height": 0.08,
				"fontSize": 38,
				"fontFamily": "Noto Sans SC",
				"fontWeight": "700",
				"color": "#111111",
				"textAlign": "center",
				"lineHeight": 1.05,
				"letterSpacing": 2,
				"strokeColor": "#ffffff",
				"strokeWidth": 1.5,
				"opacity": 0.8,
				"confidence": 0.95
			}
		]
	}`)
	if err != nil {
		t.Fatal(err)
	}
	if len(extraction.Layers) != 1 {
		t.Fatalf("expected one layer, got %d", len(extraction.Layers))
	}
	layer := extraction.Layers[0]
	if layer.Text != "新品上市" || layer.X != 0.2 || layer.Y != 0.3 || layer.Width != 0.4 || layer.Height != 0.08 {
		t.Fatalf("unexpected layer: %#v", layer)
	}
	if layer.Color != "#111111" || layer.TextAlign != "center" {
		t.Fatalf("unexpected style: %#v", layer)
	}
	if layer.LineHeight != 1.05 || layer.LetterSpacing != 2 || layer.StrokeColor != "#ffffff" || layer.StrokeWidth != 1.5 || layer.Opacity != 0.8 {
		t.Fatalf("unexpected rendering style: %#v", layer)
	}
}

func TestParseTextExtractionSkipsEmptyText(t *testing.T) {
	extraction, err := parseTextExtraction(`{"items":[{"text":"","x":0,"y":0,"width":0.2,"height":0.1}]}`)
	if err != nil {
		t.Fatal(err)
	}
	if len(extraction.Layers) != 0 {
		t.Fatalf("expected no layers, got %d", len(extraction.Layers))
	}
}

func TestParseTextExtractionSkipsDuplicateLayers(t *testing.T) {
	extraction, err := parseTextExtraction(`{
		"items": [
			{"text":"SALE","x":0.1,"y":0.2,"width":0.3,"height":0.1},
			{"text":"SALE","x":0.105,"y":0.205,"width":0.29,"height":0.095},
			{"text":"NEW","x":0.1,"y":0.4,"width":0.2,"height":0.08}
		]
	}`)
	if err != nil {
		t.Fatal(err)
	}
	if len(extraction.Layers) != 2 {
		t.Fatalf("expected duplicate layer to be skipped, got %d", len(extraction.Layers))
	}
}