package parser

import (
	"os"
	"path/filepath"
	"strings"
	"testing"
)

func readFile(t *testing.T, fileName string) string {
	path := filepath.Join("testdata", fileName)
	data, err := os.ReadFile(path)
	if err != nil {
		t.Fatalf("failed to read test data file: %v", err)
	}
	return string(data)
}

func TestExtractBlocks(t *testing.T) {
	src := readFile(t, "recipe.schema.md")
	blocks := ExtractBlocks(src)

	expected := []struct {
		Type    BlockType
		Content string
	}{
		{BlockMatching, "---\\n"},
		{BlockData, "{ . }"},
		{BlockMatching, "\\n---\\n\\n# "},
		{BlockData, "{ name | text,required }"},
		{BlockMatching, "\\n\\n"},
		{BlockData, "{ description | text,optional }"},
		{BlockMatching, "\\n\\n## Ingredients\\n"},
		{BlockData, "{\\n  path: recipeIngredient\\n  codec: list\\n  required: true\\n  item:\\n    template: \"- { . }\"\\n}"},
		{BlockMatching, "\\n\\n## Steps\\n"},
		{BlockData, "{\\n  path: recipeInstructions\\n  codec: list\\n  required: true\\n  item:\\n    template: \"{ @index }. { . }\"\\n}"},
	}

	if len(blocks) != len(expected) {
		t.Fatalf("expected %d blocks, got %d", len(expected), len(blocks))
	}

	for i, b := range blocks {
		exp := expected[i]
		content := strings.ReplaceAll(b.GetContent(), "\n", "\\n")
		if b.Type != exp.Type || content != exp.Content {
			t.Errorf("Block %d: expected %v, got Type: %v, Start: %d, End: %d, Content: %s", i, exp, b.Type, b.Start, b.End, content)
		}
	}

}