package httpapi

import (
	"bytes"
	"encoding/base64"
	"mime/multipart"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"

	"github.com/descrybe/descrybe-v2/apps/api/internal/catalog"
)

func TestParseSyncA1JSON_Base64Upload(t *testing.T) {
	t.Parallel()
	sql := "INSERT INTO `wp_product_categories` (`Name`, `Prompt`) VALUES\n('A','GPT predloga:\\n<name>{x}</name><metaDescription>{y}</metaDescription>');\n"
	b64 := base64.StdEncoding.EncodeToString([]byte(sql))
	body := `{"confirm":true,"wp_product_categories_sql_b64":"` + b64 + `"}`
	req := httptest.NewRequest(http.MethodPost, "/sync", strings.NewReader(body))
	req.Header.Set("Content-Type", "application/json")
	parsed, err := parseSyncA1JSON(req)
	if err != nil {
		t.Fatal(err)
	}
	if !parsed.Confirm {
		t.Fatal("confirm")
	}
	if string(parsed.WPCategoriesSQL) != sql {
		t.Fatalf("sql mismatch len=%d", len(parsed.WPCategoriesSQL))
	}
}

func TestParseSyncA1JSON_RejectsOversizedBase64(t *testing.T) {
	t.Parallel()
	raw := make([]byte, catalog.MaxWPCategorySQLBytes+1)
	b64 := base64.StdEncoding.EncodeToString(raw)
	body := `{"confirm":true,"wp_product_categories_sql_b64":"` + b64 + `"}`
	req := httptest.NewRequest(http.MethodPost, "/sync", strings.NewReader(body))
	req.Header.Set("Content-Type", "application/json")
	_, err := parseSyncA1JSON(req)
	if err == nil {
		t.Fatal("expected too-large error")
	}
}

func TestParseSyncA1Multipart_FileUpload(t *testing.T) {
	t.Parallel()
	sql := "INSERT INTO `wp_product_categories` (`Name`, `Prompt`) VALUES\n('B','GPT predloga:\\n<name>{x}</name><metaDescription>{y}</metaDescription>');\n"
	var buf bytes.Buffer
	w := multipart.NewWriter(&buf)
	if err := w.WriteField("confirm", "true"); err != nil {
		t.Fatal(err)
	}
	part, err := w.CreateFormFile("wp_product_categories", "wp_product_categories.sql")
	if err != nil {
		t.Fatal(err)
	}
	if _, err := part.Write([]byte(sql)); err != nil {
		t.Fatal(err)
	}
	ct := w.FormDataContentType()
	if err := w.Close(); err != nil {
		t.Fatal(err)
	}
	req := httptest.NewRequest(http.MethodPost, "/sync", bytes.NewReader(buf.Bytes()))
	req.Header.Set("Content-Type", ct)
	parsed, err := parseSyncA1Multipart(req)
	if err != nil {
		t.Fatal(err)
	}
	if !parsed.Confirm {
		t.Fatal("confirm")
	}
	if string(parsed.WPCategoriesSQL) != sql {
		t.Fatalf("sql mismatch len=%d", len(parsed.WPCategoriesSQL))
	}
}