package eprel

import "testing"

func TestExtractFromAttrs_flatKeys(t *testing.T) {
	got := ExtractFromAttrs(map[string]any{
		"eprel_id":           "1632113",
		"eprel_label":        "https://eprel.ec.europa.eu/api/product/1632113/labels?format=png",
		"eprel_pdf_url":      "https://eprel.ec.europa.eu/fiches/x.pdf",
		"eprel_energy_class": "A",
		"brand":              "Samsung",
	})
	m, ok := got.(map[string]any)
	if !ok {
		t.Fatalf("type=%T", got)
	}
	if m["id"] != "1632113" || m["label"] == nil || m["pdf"] == nil || m["energy_class"] != "A" {
		t.Fatalf("got=%v", m)
	}
	if _, leak := m["eprel_id"]; leak {
		t.Fatalf("alias leaked: %v", m)
	}
}

func TestExtractFromAttrs_nestedAliasesNormalized(t *testing.T) {
	got := ExtractFromAttrs(map[string]any{
		"eprel": map[string]any{
			"eprel_id":           "2208111",
			"eprel_label":        "https://eprel.ec.europa.eu/api/product/2208111/labels?format=png",
			"eprel_pdf":          "https://eprel.ec.europa.eu/fiches/y.pdf",
			"eprel_energy_class": "E",
			"source":             "eprel_api",
		},
	})
	m, ok := got.(map[string]any)
	if !ok {
		t.Fatalf("type=%T", got)
	}
	if m["id"] != "2208111" {
		t.Fatalf("id=%v", m["id"])
	}
	if m["label"] == nil || m["pdf"] == nil {
		t.Fatalf("missing label/pdf: %v", m)
	}
	if m["energy_class"] != "E" {
		t.Fatalf("energy_class=%v", m["energy_class"])
	}
	if _, ok := m["eprel_id"]; ok {
		t.Fatalf("eprel_id alias must be folded: %v", m)
	}
	if _, ok := m["source"]; ok {
		t.Fatalf("non-canonical keys must be dropped: %v", m)
	}
}

func TestExtractFromAttrs_nestedPartialFilledFromFlat(t *testing.T) {
	got := ExtractFromAttrs(map[string]any{
		"eprel": map[string]any{
			"id":    "1632113",
			"label": "https://eprel.ec.europa.eu/api/product/1632113/labels?format=png",
		},
		"eprel_pdf":          "https://eprel.ec.europa.eu/fiches/z.pdf",
		"eprel_energy_class": "A",
	})
	m, ok := got.(map[string]any)
	if !ok {
		t.Fatalf("type=%T", got)
	}
	if m["id"] != "1632113" || m["pdf"] == nil || m["energy_class"] != "A" {
		t.Fatalf("got=%v", m)
	}
}

func TestNormalizeShape_empty(t *testing.T) {
	if NormalizeShape(nil) != nil {
		t.Fatal("nil")
	}
	if NormalizeShape(map[string]any{}) != nil {
		t.Fatal("empty")
	}
	if NormalizeShape(map[string]any{"eprel_id": ""}) != nil {
		t.Fatal("blank")
	}
}