// Command repair-category-prompts replaces legacy A1 / Platform Demo categories.prompt
// HTML marketing formulas with aiprompts.CategoryEnhanceUserTemplate (JSON-compatible
// user overlay: {{name}} {{description}} {{attrs}} {{category}} {{language}}; stores
// both prompt->>'sl' and "*"). Does not touch title_template / description_template
// (formulas are appended as plain-text instructions at enhance render time).
//
// Usage (from apps/api):
//
//	go run ./cmd/repair-category-prompts -dry-run
//	go run ./cmd/repair-category-prompts -apply
//
// 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)")
	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()

	// Always print dry-run counts first when applying, so operators see the delta.
	preview, err := catalog.RepairA1DemoCategoryEnhancePrompts(ctx, pg, true)
	if err != nil {
		log.Fatalf("dry-run: %v", err)
	}
	printResult("dry-run", preview)

	if doDryRun {
		return
	}

	res, err := catalog.RepairA1DemoCategoryEnhancePrompts(ctx, pg, false)
	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))
}