package mysql

import (
	"context"
	"errors"
	"testing"
	"time"

	"go.uber.org/zap"
	"go.uber.org/zap/zapcore"
	"go.uber.org/zap/zaptest/observer"
	"gorm.io/gorm"
	gormlogger "gorm.io/gorm/logger"
)

func TestGormLoggerTrace(t *testing.T) {
	core, logs := observer.New(zapcore.DebugLevel)
	z := zap.New(core)
	gl := newGormLogger(z, time.Millisecond, gormlogger.Info)
	gl.Trace(context.Background(), time.Now().Add(-10*time.Millisecond), func() (string, int64) {
		return "SELECT 1", 1
	}, nil)
	if logs.FilterMessage("sql_slow").Len() != 1 {
		t.Fatalf("want sql_slow, got %+v", logs.All())
	}
	gl.Trace(context.Background(), time.Now(), func() (string, int64) {
		return "SELECT 2", 1
	}, nil)
	if logs.FilterMessage("sql").Len() < 1 {
		t.Fatalf("want sql, got %+v", logs.All())
	}
	gl.Trace(context.Background(), time.Now(), func() (string, int64) {
		return "SELECT 3", 0
	}, errors.New("boom"))
	if logs.FilterMessage("sql").FilterLevelExact(zapcore.ErrorLevel).Len() < 1 {
		t.Fatalf("want sql error, got %+v", logs.All())
	}
	gl.Trace(context.Background(), time.Now(), func() (string, int64) {
		return "SELECT 4", 0
	}, gorm.ErrRecordNotFound)
}

func TestParseGormLevel(t *testing.T) {
	if parseGormLevel("", "debug") != gormlogger.Info {
		t.Fatal("debug follows zap")
	}
	if parseGormLevel("", "info") != gormlogger.Warn {
		t.Fatal("info default warn")
	}
	if parseGormLevel("silent", "debug") != gormlogger.Silent {
		t.Fatal("silent")
	}
}

func TestOpenEmptyDSN(t *testing.T) {
	db, err := Open(zap.NewNop(), &Options{})
	if err != nil || db.Ready() {
		t.Fatalf("empty dsn %v ready=%v", err, db.Ready())
	}
}