package simdj

import (
	"fmt"
	"io"
	"sync"
	"sync/atomic"

	"github.com/minio/minio/internal/s3select/json"
	"github.com/minio/minio/internal/s3select/sql"
	"github.com/minio/simdjson-go"
)

// Reader - JSON record reader for S3Select.
type Reader struct {
	args    *json.ReaderArgs
	input   chan simdjson.Stream
	decoded chan simdjson.Object

		Vars    []interface{}
	}{
		{
			[]clause.Interface{clause.Select{}, clause.From{}, clause.Locking{Strength: clause.LockingStrengthUpdate}},
			"SELECT * FROM `users` FOR UPDATE", nil,
		},
		{
			[]clause.Interface{clause.Select{}, clause.From{}, clause.Locking{Strength: clause.LockingStrengthShare, Table: clause.Table{Name: clause.CurrentTable}}},
			"SELECT * FROM `users` FOR SHARE OF `users`", nil,
		},
		{

		t.Fatalf("Build Select with slice, but got %v", r.Statement.SQL.String())
	}

	// SELECT COALESCE(age,'42') FROM users;
	r = dryDB.Table("users").Select("COALESCE(age,?)", 42).Find(&User{})
	if !regexp.MustCompile(`SELECT COALESCE\(age,.*\) FROM .*users.*`).MatchString(r.Statement.SQL.String()) {
		t.Fatalf("Build Select with func, but got %v", r.Statement.SQL.String())
	}

	// named arguments

	var age int64
	if err := row.Scan(&age); err != nil {
		t.Fatalf("Failed to scan age, got %v", err)
	}

	if age != 10 {
		t.Errorf("Scan with Row, age expects: %v, got %v", user2.Age, age)
	}

	table := "gorm.users"
	if DB.Dialector.Name() != "mysql" || isTiDB() {
		table = "users" // other databases doesn't support select with `database.table`
	}

	// Translate doubled quotes
	*qi = QuotedIdentifier(strings.ReplaceAll(r, `""`, `"`))
	return nil
}

// Types representing AST of SQL statement. Only SELECT is supported.

// Select is the top level AST node type
type Select struct {
	Expression *SelectExpression `parser:"\"SELECT\" @@"`
	From       *TableExpression  `parser:"\"FROM\" @@"`
	Where      *Expression       `parser:"( \"WHERE\" @@ )?"`

		updateTime := 30*time.Second + time.Duration(float64(10*time.Second)*rand.Float64())
		t := time.NewTicker(updateTime)
		defer t.Stop()
		defer saverWg.Done()
		var lastSave time.Time

		for {
			select {
			case <-t.C:
				if cache.Info.LastUpdate.Equal(lastSave) {
					continue
				}
				scannerLogOnceIf(ctx, cache.save(ctx, er, dataUsageCacheName), "nsscanner-cache-update")
				updates <- cache.clone()

			return
		}
		if m, _, _ := isIndexedMetaV2(metadata); m != nil && !m.AllHidden(true) {
			objsReturned++
		}
	}
	send := func(entry metaCacheEntry) error {
		objReturned(entry.metadata)
		select {
		case <-ctx.Done():
			return ctx.Err()
		case out <- entry:
		}
		return nil
	}

	// Fast exit track to check if we are listing an object with

				// Do not return io.EOF
				if resCh != nil {
					resErr = nil
					select {
					case resCh <- results:
					case <-ctx.Done():
					}
					resCh = nil
					returned = true
				}
				continue
			}
			results.o = append(results.o, entry)
		}
		if resCh != nil {
			resErr = io.EOF
			select {
			case <-ctx.Done():
				// Nobody wants it.
			case resCh <- results:
			}

			}
			continue
		}
		wg.Add(1)
		go func(ctx context.Context, peerChannel <-chan MetricV2, wg *sync.WaitGroup) {
			defer wg.Done()
			for {
				select {
				case m, ok := <-peerChannel:
					if !ok {
						return
					}
					select {
					case ch <- m:
					case <-ctx.Done():
						return
					}
				case <-ctx.Done():
					return
				}
			}

	tolerance = len(restClnts) - quorum
	attempt := uint(0)

	for {
		select {
		case <-ctx.Done():
			return false
		default:
			// Try to acquire the lock.
			if locked = lock(ctx, dm.clnt, &locks, id, source, isReadLock, tolerance, quorum, dm.Names...); locked {
				dm.m.Lock()