package main

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

func TestResolveMySQLDumpPathExplicit(t *testing.T) {
	dir := t.TempDir()
	p := filepath.Join(dir, "descrybe_new.sql")
	if err := os.WriteFile(p, []byte("-- dump\n"), 0o644); err != nil {
		t.Fatal(err)
	}
	got := resolveMySQLDumpPath(p)
	if got != p {
		t.Fatalf("got %q want %q", got, p)
	}
}

func TestResolveMySQLDumpPathMissingExplicitFallsBack(t *testing.T) {
	dir := t.TempDir()
	want := filepath.Join(dir, "descrybe_new (1).sql")
	if err := os.WriteFile(want, []byte("-- dump\n"), 0o644); err != nil {
		t.Fatal(err)
	}
	t.Setenv("SEED_A1_MYSQL_DUMP", want)
	got := resolveMySQLDumpPath(filepath.Join(dir, "missing.sql"))
	if got != want {
		t.Fatalf("got %q want fallback %q", got, want)
	}
}

func TestMysqlDumpCandidatesIncludeDownloadsName(t *testing.T) {
	found := false
	for _, c := range mysqlDumpCandidates() {
		if filepath.Base(c) == "descrybe_new (1).sql" {
			found = true
			break
		}
	}
	if !found {
		t.Fatal("expected Downloads/descrybe_new (1).sql among candidates")
	}
}

func TestMappedCoveragePct(t *testing.T) {
	c := mappedCoverage{Total: 200, WithDesc: 100, WithCat: 50, WithAttrs: 200}
	if c.pct(c.WithDesc) != 50 {
		t.Fatalf("desc pct=%v want 50", c.pct(c.WithDesc))
	}
	if c.pct(c.WithCat) != 25 {
		t.Fatalf("cat pct=%v want 25", c.pct(c.WithCat))
	}
	empty := mappedCoverage{}
	if empty.pct(1) != 0 {
		t.Fatalf("empty total should yield 0")
	}
}

func TestScanA1ProcessedCategoriesKeepsDescriptionNullSafe(t *testing.T) {
	// Dump original description/attributes are often NULL; category must still map.
	const legacy = "97e1a309-3d23-4aa2-b518-8e8d7afdfec7"
	dump := strings.Join([]string{
		"INSERT INTO `processed_products` VALUES",
		"(1,\t'u',\t'790069217715',\t'Name',\t'103',\tNULL,\t'<p>ai</p>',\tNULL,\tNULL,\t'completed',\tNULL,\t0,\t'2026-01-01 00:00:00',\t'2026-01-01 00:00:00',\t1,\t'" + legacy + "',\t1);",
		"CREATE TABLE `x` (",
	}, "\n")
	got, err := scanA1ProcessedCategories(strings.NewReader(dump), legacy)
	if err != nil {
		t.Fatal(err)
	}
	if got["790069217715"] != "103" {
		t.Fatalf("category=%q want 103", got["790069217715"])
	}
}