package invoice

import (
	"os"
	"strings"
	"testing"
)

func TestParseMarkdownSample(t *testing.T) {
	file, err := os.Open("../../testdata/sample.md")
	if err != nil {
		t.Fatalf("open sample: %v", err)
	}
	defer file.Close()

	doc, err := ParseMarkdown(file)
	if err != nil {
		t.Fatalf("ParseMarkdown: %v", err)
	}
	if doc.Seller.Name != "Alice Example" {
		t.Fatalf("seller name mismatch: %q", doc.Seller.Name)
	}
	if doc.Seller.Email != "alice@example.com" {
		t.Fatalf("seller email mismatch: %q", doc.Seller.Email)
	}
	if doc.Seller.Phone != "01 02 03 04 05" {
		t.Fatalf("seller phone mismatch: %q", doc.Seller.Phone)
	}
	if doc.Buyer.Name != "Example Corp" {
		t.Fatalf("buyer name mismatch: %q", doc.Buyer.Name)
	}
	if doc.Invoice.Number != "20250407" {
		t.Fatalf("invoice number mismatch: %q", doc.Invoice.Number)
	}
	if len(doc.Items) != 1 {
		t.Fatalf("expected 1 item, got %d", len(doc.Items))
	}
	if !strings.HasPrefix(doc.Items[0].Designation, "Forfait IT") {
		t.Fatalf("designation mismatch: %q", doc.Items[0].Designation)
	}
}

func TestValidateMissingFields(t *testing.T) {
	doc := Document{}
	if err := Validate(&doc); err == nil {
		t.Fatalf("expected validation error")
	}
}