package parser_test

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

	"git.max-richter.dev/max/marka/parser"
)

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 TestFuzzyFindAll(t *testing.T) {
	recipeMd := readFile(t, "baguette.md")

	tests := []struct {
		Needle                 string
		Start, End, StartIndex int
	}{
		{StartIndex: 0, Needle: "# Ingredients\n", Start: 72, End: 86},
		{StartIndex: 0, Needle: "# Ingrdients\n", Start: 72, End: 86},
		{StartIndex: 0, Needle: "# Inrdients\n", Start: 72, End: 86},
		{StartIndex: 0, Needle: "---\n", Start: 0, End: 4},
		{StartIndex: 4, Needle: "---\n", Start: 24, End: 28},
		{StartIndex: 0, Needle: "# Steps\n", Start: 111, End: 119},
		{StartIndex: 0, Needle: "# Stps\n", Start: 111, End: 119},
		{StartIndex: 0, Needle: "# Step\n", Start: 111, End: 119},
	}

	for _, test := range tests {
		start, end := parser.FuzzyFind(recipeMd, test.StartIndex, test.Needle, 0.3) // allow 50% error

		if start != test.Start || end != test.End {
			t.Errorf("Start or end do not match: Needle=%q Start=%d/%d End=%d/%d", test.Needle, test.Start, start, test.End, end)
		}
	}

}

func TestFuzzyBlockMatch(t *testing.T) {
	recipeMd := readFile(t, "baguette.md")
	schemaMd := readFile(t, "recipe.schema.md")
	blocks := parser.ExtractBlocks(schemaMd)
	matches := parser.MatchBlocksFuzzy(recipeMd, blocks, 0.3)

	expected := []struct {
		value string
	}{
		{
			value: "author: Max Richter",
		},
		{
			value: "Baguette",
		},
		{
			value: "My favourite baguette recipe",
		},
		{
			value: "- Flour\n- Water\n- Salt",
		},
		{
			value: "1. Mix Flour Water and Salt\n2. Bake the bread",
		},
	}

	for i, m := range matches {
		if i > len(expected)-1 {
			t.Errorf("No expected result for match: %d -> %q", i, m.GetContent())
			t.FailNow()
		}
		if expected[i].value != m.GetContent() {
			t.Errorf("Match %d did not match expected: %q", i, m.GetContent())
		}
	}

}