// Command repair-category-prompts rewrites A1 / Platform Demo categories.prompt
// values into aiprompts role-sectioned overlays (Title / Description / Meta /
// Attributes). Prefers wp_product_categories.sql (SEED_A1_WP_CATEGORIES /
// scripts/seed) as source of truth, else a1-category-prompts.json. Legacy combined
// Slovenian name+description blobs are split so naming rules land under Title
// and HTML under Description; otherwise CategoryEnhanceUserTemplate is used.
// Also repairs empty or brand-only title_template and empty description_template
// from legacy <name> / HTML / meta rules (never brand-only).
//
// Usage (from apps/api):
//
//	go run ./cmd/repair-category-prompts -dry-run
//	go run ./cmd/repair-category-prompts -apply
//	go run ./cmd/repair-category-prompts -apply -wp-categories ../../scripts/seed/wp_product_categories.sql
//	go run ./cmd/repair-category-prompts -apply -prompts ../../scripts/seed/a1-category-prompts.json
//
// DATABASE_URL / -postgres required. Default is dry-run (count only).
package main

import (
	"context"
	"encoding/json"
	"flag"
	"fmt"
	"log"
	"os"
	"strings"
	"time"

	"github.com/descrybe/descrybe-v2/apps/api/internal/catalog"
	"github.com/jackc/pgx/v5/pgxpool"
)

func main() {
	postgresURL := flag.String("postgres", os.Getenv("DATABASE_URL"), "Postgres URL (DATABASE_URL)")
	dryRun := flag.Bool("dry-run", true, "count rows that would update (default true)")
	apply := flag.Bool("apply", false, "write updates (implies not dry-run)")
	promptsPath := flag.String("prompts", "", "path to a1-category-prompts.json (optional fallback)")
	wpPath := flag.String("wp-categories", os.Getenv("SEED_A1_WP_CATEGORIES"), "path to wp_product_categories.sql (preferred source of truth)")
	flag.Parse()

	if strings.TrimSpace(*postgresURL) == "" {
		log.Fatal("-postgres / DATABASE_URL is required")
	}
	doDryRun := *dryRun
	if *apply {
		doDryRun = false
	}

	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Minute)
	defer cancel()

	pg, err := pgxpool.New(ctx, *postgresURL)
	if err != nil {
		log.Fatalf("postgres: %v", err)
	}
	defer pg.Close()

	opts := catalog.RepairA1DemoOptions{
		SeedPromptsPath:  strings.TrimSpace(*promptsPath),
		WPCategoriesPath: strings.TrimSpace(*wpPath),
	}

	// Always print dry-run counts first when applying, so operators see the delta.
	preview, err := catalog.RepairA1DemoCategoryEnhancePromptsWithOptions(ctx, pg, true, opts)
	if err != nil {
		log.Fatalf("dry-run: %v", err)
	}
	printResult("dry-run", preview)

	if doDryRun {
		return
	}

	res, err := catalog.RepairA1DemoCategoryEnhancePromptsWithOptions(ctx, pg, false, opts)
	if err != nil {
		log.Fatalf("apply: %v", err)
	}
	printResult("apply", res)
}

func printResult(phase string, res catalog.RepairCategoryEnhancePromptsResult) {
	b, err := json.MarshalIndent(res, "", "  ")
	if err != nil {
		log.Printf("%s: %+v", phase, res)
		return
	}
	fmt.Printf("%s:\n%s\n", phase, string(b))
}