package feeds

import (
	"strings"
	"testing"
)

func TestExtractCSVSchema(t *testing.T) {
	data := []byte("ean,title,price\n123,Widget,9.99\n456,Gadget,12.50\n")
	fields, rows, preview, err := extractCSVSchema(data)
	if err != nil {
		t.Fatal(err)
	}
	if rows != 2 {
		t.Fatalf("rows=%d", rows)
	}
	if len(fields) != 3 {
		t.Fatalf("fields=%d", len(fields))
	}
	if !strings.Contains(preview, "ean,title,price") {
		t.Fatalf("preview missing header: %q", preview)
	}
	if fields[0].Path != "ean" {
		t.Fatalf("first field %q", fields[0].Path)
	}
}

func TestExtractXMLSchema(t *testing.T) {
	data := []byte(`<?xml version="1.0"?>
<rss><channel>
<item><title>A</title><g:gtin>111</g:gtin></item>
<item><title>B</title><g:gtin>222</g:gtin></item>
</channel></rss>`)
	fields, rows, err := extractXMLSchema(data, "item")
	if err != nil {
		t.Fatal(err)
	}
	if rows != 2 {
		t.Fatalf("rows=%d", rows)
	}
	if len(fields) == 0 {
		t.Fatal("expected fields")
	}
	foundTitle := false
	for _, f := range fields {
		if f.FieldName == "title" || f.Path == "title" {
			foundTitle = true
		}
	}
	if !foundTitle {
		t.Fatalf("title not found in %#v", fields)
	}
}

func TestParseMappingsWrapped(t *testing.T) {
	raw := map[string]any{
		"item_path": "rss/channel/item",
		"fields": []any{
			map[string]any{"source": "gtin", "target": "gtin"},
			map[string]any{"source": "title", "target": "title"},
		},
	}
	got := parseMappings(raw)
	if len(got) != 2 {
		t.Fatalf("got %d mappings: %#v", len(got), got)
	}
	if itemPathFromMappings(raw) != "rss/channel/item" {
		t.Fatalf("item path: %q", itemPathFromMappings(raw))
	}
}