//go:build llm_script

package main

import (
	"database/sql"
	"flag"
	"fmt"
	"io"
	"net/http"
	"os"
	"time"
)

type aliyunSubscriptionImportConfig struct {
	TokenURL      string
	CodingURL     string
	TokenFixture  string
	CodingFixture string
	DryRun        bool
	Timeout       time.Duration
}

func main() {
	loadSubscriptionImportEnv()

	var tokenURL string
	var codingURL string
	var tokenFixture string
	var codingFixture string
	var dryRun bool
	var timeoutSeconds int

	flag.StringVar(&tokenURL, "token-url", defaultAliyunTokenPlanURL, "阿里云 Token Plan 文档 URL")
	flag.StringVar(&codingURL, "coding-url", defaultAliyunCodingPlanURL, "阿里云 Coding Plan 文档 URL")
	flag.StringVar(&tokenFixture, "token-fixture", "", "阿里云 Token Plan 本地样例文件")
	flag.StringVar(&codingFixture, "coding-fixture", "", "阿里云 Coding Plan 本地样例文件")
	flag.BoolVar(&dryRun, "dry-run", false, "仅解析并打印摘要，不写入数据库")
	flag.IntVar(&timeoutSeconds, "timeout", 20, "请求超时（秒）")
	flag.Parse()

	cfg := aliyunSubscriptionImportConfig{
		TokenURL:      tokenURL,
		CodingURL:     codingURL,
		TokenFixture:  tokenFixture,
		CodingFixture: codingFixture,
		DryRun:        dryRun,
		Timeout:       time.Duration(timeoutSeconds) * time.Second,
	}

	var db *sql.DB
	var err error
	if !cfg.DryRun {
		db, err = subscriptionImportDB()
		if err != nil {
			fmt.Fprintf(os.Stderr, "open db: %v\n", err)
			os.Exit(1)
		}
		defer db.Close()
	}

	if err := runAliyunSubscriptionImport(cfg, db, os.Stdout); err != nil {
		fmt.Fprintf(os.Stderr, "import_aliyun_subscription: %v\n", err)
		os.Exit(1)
	}
}

func runAliyunSubscriptionImport(cfg aliyunSubscriptionImportConfig, db *sql.DB, out io.Writer) error {
	client := &http.Client{Timeout: cfg.Timeout}
	tokenRaw, err := fetchSubscriptionPage(cfg.TokenURL, cfg.TokenFixture, client)
	if err != nil {
		return err
	}
	codingRaw, err := fetchSubscriptionPage(cfg.CodingURL, cfg.CodingFixture, client)
	if err != nil {
		return err
	}

	records, err := parseAliyunSubscriptionCatalog(tokenRaw, codingRaw)
	if err != nil {
		return err
	}
	if cfg.DryRun {
		_, err = fmt.Fprintf(out, "source=aliyun-subscription-import plans=%d provider=%s operator=%s dry_run=true\n", len(records), records[0].ProviderName, records[0].OperatorName)
		return err
	}
	if db == nil {
		return fmt.Errorf("db is required when dry-run=false")
	}
	if err := upsertSubscriptionImportRecords(db, records); err != nil {
		return err
	}

	var tableRows int
	if err := db.QueryRow(`SELECT COUNT(*) FROM subscription_plan`).Scan(&tableRows); err != nil {
		return fmt.Errorf("count subscription_plan: %w", err)
	}
	_, err = fmt.Fprintf(out, "source=aliyun-subscription-import plans=%d provider=%s operator=%s table_rows=%d dry_run=false\n", len(records), records[0].ProviderName, records[0].OperatorName, tableRows)
	return err
}