package main

import (
	"encoding/json"
	"fmt"
	"log"
	"os"
	"path/filepath"
	"strings"

	"github.com/jmoiron/sqlx"
	"github.com/spf13/viper"

	_ "github.com/go-sql-driver/mysql"

	"git.kplus.net.ua/yevhen/resource-scraper/internal/releaseparser/groups"
)

func main() {
	if len(os.Args) < 2 {
		log.Fatal("usage: srrdb <releaser> [<releaser>...]")
	}
	releasers := os.Args[1:]

	// Читаємо config/secret.yaml (без змісту в коді — тільки потрібні ключі)
	viper.SetConfigFile("config/secret.yaml")
	if err := viper.ReadInConfig(); err != nil {
		log.Fatal("failed to read config/secret.yaml: ", err)
	}

	drv := viper.GetString("db.driver")
	dsn := viper.GetString("db.data_source_name")

	dbase, err := sqlx.Connect(drv, dsn)
	if err != nil {
		panic("Failed to connect to the database: " + err.Error())
	}
	defer dbase.Close()

	const outDir = "tmp/releaseparser"
	if err := os.MkdirAll(outDir, 0o755); err != nil {
		log.Fatal(err)
	}

	out := make(map[string]groups.GroupStats, len(releasers))

	for _, releaser := range releasers {
		var titles []string

		err = dbase.Select(&titles,
			`SELECT title FROM theamok_mdb.external_sources
			  WHERE type = 'prescene' AND releaser = ?`, releaser)
		if err != nil {
			log.Fatal(err)
		}

		out[releaser] = groups.AnalyzeTitles(titles)

		// Per-group parsed records keyed by the actual group read from each
		// line: every release with all resolved fields for manual validation.
		for group, parsed := range groups.ParseByGroup(titles) {
			writeJSON(filepath.Join(outDir, safeName(group)+".json"), parsed)
		}

		// Per-request report identical to what is printed to the console.
		writeJSON(filepath.Join(outDir, safeName(releaser)+".report.json"), out[releaser])
	}

	data, err := json.MarshalIndent(out, "", "  ")
	if err != nil {
		log.Fatal(err)
	}

	// Ручна ревізія: всі невідомі токени — у файл для правки бази.
	review, err := os.OpenFile("review_unknown_tokens.txt",
		os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0o644)
	if err != nil {
		log.Fatal(err)
	}
	defer review.Close()
	for releaser, stats := range out {
		for _, unk := range stats.UnknownTokens {
			for _, rel := range unk.Releases {
				fmt.Fprintf(review, "%s\t%s\t%s\n", releaser, unk.Token, rel)
			}
		}
		for _, warn := range stats.WarningStats {
			for _, rel := range warn.Releases {
				fmt.Fprintf(review, "%s\tWARN\t%s\t%s\n", releaser, warn.Token, rel)
			}
		}
	}

	fmt.Println(string(data))
}

// writeJSON writes value as an indented JSON document to the given path.
func writeJSON(path string, value any) {
	data, err := json.MarshalIndent(value, "", "  ")
	if err != nil {
		log.Fatalf("marshal %s: %v", path, err)
	}
	if err := os.WriteFile(path, data, 0o644); err != nil {
		log.Fatalf("write %s: %v", path, err)
	}
}

// safeName strips characters that are unsafe in file names.
func safeName(s string) string {
	repl := func(r rune) rune {
		switch {
		case r >= 'a' && r <= 'z':
			return r
		case r >= 'A' && r <= 'Z':
			return r
		case r >= '0' && r <= '9':
			return r
		case r == '-' || r == '_' || r == '.':
			return r
		default:
			return '_'
		}
	}
	return strings.Map(repl, s)
}