package catalog

import (
	"encoding/json"
	"testing"
)

func TestNormalizeGTIN(t *testing.T) {
	if got := NormalizeGTIN(" 400-599-8858394 "); got != "4005998858394" {
		t.Fatalf("got %q", got)
	}
	if got := NormalizeGTIN("SKU-ABC"); got != "SKU-ABC" {
		t.Fatalf("non-digit fallback got %q", got)
	}
}

func TestBuildMappedDataFromV1Item(t *testing.T) {
	mapped := BuildMappedDataFromV1Item(V1ProcessItem{
		EAN:              "1234567890123",
		Title:            "Widget",
		Description:      "A widget",
		CategoryUniqueID: "electronics",
		MainImage:        "https://cdn.example.com/w.jpg",
		MoreImages:       []any{"https://cdn.example.com/w2.jpg"},
		Specifications:   []map[string]any{{"key": "color", "value": "red"}},
	})
	if mapped["ean"] != "1234567890123" || mapped["title"] != "Widget" {
		t.Fatalf("mapped=%v", mapped)
	}
	if mapped["category"] != "electronics" {
		t.Fatalf("category=%v", mapped["category"])
	}
	if mapped["image_url"] != "https://cdn.example.com/w.jpg" {
		t.Fatalf("image_url=%v", mapped["image_url"])
	}
	b, _ := json.Marshal(mapped["additional_image_urls"])
	if string(b) != `["https://cdn.example.com/w2.jpg"]` {
		t.Fatalf("more=%s", b)
	}
}

func TestBuildMappedDataFromV1ItemOmitsEmptyNulls(t *testing.T) {
	mapped := BuildMappedDataFromV1Item(V1ProcessItem{EAN: "123"})
	if _, ok := mapped["title"]; ok {
		t.Fatalf("empty title must be omitted, got %v", mapped)
	}
	if _, ok := mapped["description"]; ok {
		t.Fatalf("empty description must be omitted, got %v", mapped)
	}
	if !v1ItemHasContent(V1ProcessItem{EAN: "1", Title: "x"}) {
		t.Fatal("title should count as content")
	}
	if v1ItemHasContent(V1ProcessItem{EAN: "1"}) {
		t.Fatal("EAN-only must not count as content")
	}
}

func TestExtractProductImages_promotesMoreimagesWhenMainEmpty(t *testing.T) {
	main, more := ExtractProductImages(map[string]any{
		"main_image": "",
		"moreimages": "https://cdn.example.com/a.jpg,https://cdn.example.com/b.jpg",
	}, nil)
	if main != "https://cdn.example.com/a.jpg" {
		t.Fatalf("main=%q", main)
	}
	if len(more) != 1 || more[0] != "https://cdn.example.com/b.jpg" {
		t.Fatalf("more=%v", more)
	}
}

func TestExtractProductImages_imagesStringSliceAndSrcObjects(t *testing.T) {
	main, more := ExtractProductImages(map[string]any{
		"images": []string{
			"https://cdn.example.com/main.jpg",
			"https://cdn.example.com/2.jpg",
		},
	}, nil)
	if main != "https://cdn.example.com/main.jpg" || len(more) != 1 || more[0] != "https://cdn.example.com/2.jpg" {
		t.Fatalf("string slice main=%q more=%v", main, more)
	}

	main, more = ExtractProductImages(map[string]any{
		"images": []any{
			map[string]any{"src": "https://cdn.example.com/from-src.jpg"},
			map[string]any{"src": "https://cdn.example.com/from-src-2.jpg"},
		},
	}, nil)
	if main != "https://cdn.example.com/from-src.jpg" || len(more) != 1 || more[0] != "https://cdn.example.com/from-src-2.jpg" {
		t.Fatalf("src objects main=%q more=%v", main, more)
	}
}