package repo

import (
	"context"
	"fmt"

	"github.com/tidbcloud/devops/entity"
	rtmod "github.com/tidbcloud/devops/models/remediationticket"
	"github.com/tidbcloud/devops/pkg/infra/utils/container"
	"github.com/tidbcloud/devops/pkg/infra/utils/repoopt"
	"github.com/tidbcloud/devops/pkg/service/remediationticket/repo/cvt"
	"github.com/tidbcloud/pkgv2/db"
	"gorm.io/gorm"
)

type RemediationTicketDriver interface {
	Save(ctx context.Context, ticket *entity.RemediationTicket) (*entity.RemediationTicket, error)
	Load(ctx context.Context, id uint64) (*entity.RemediationTicket, error)
	Query(ctx context.Context, opts ...repoopt.Option) ([]*entity.RemediationTicket, error)
	Count(ctx context.Context, opts ...repoopt.Option) (int64, error)
	Patch(ctx context.Context, id uint64, ticket *entity.RemediationTicket) (*entity.RemediationTicket, error)
}

type driver struct {
	cvter      *cvt.Converter
	dbProvider db.Provider
}

func (d *driver) Save(ctx context.Context, ticket *entity.RemediationTicket) (*entity.RemediationTicket, error) {
	wdb := d.dbProvider.WriteDB(ctx)
	subMod := d.cvter.EntityToModel().RemediationTicket(ticket)

	// don't update associated larkchats when save a subscription
	err := wdb.Session(&gorm.Session{FullSaveAssociations: false}).Save(subMod).Error
	if err != nil {
		return nil, fmt.Errorf("save remediation ticket failed: %w", err)
	}

	// fill back id
	return d.cvter.ModelToEntity().RemediationTicket(subMod), nil
}

func (d *driver) Load(ctx context.Context, id uint64) (*entity.RemediationTicket, error) {
	rdb := d.dbProvider.ReadDB(ctx)
	subMod := &rtmod.RemediationTicket{}

	err := rdb.Model(&rtmod.RemediationTicket{}).Where("id = ?", id).First(subMod).Error
	if err != nil {
		return nil, fmt.Errorf("load remediation ticket %d failed: %w", id, err)
	}

	return d.cvter.ModelToEntity().RemediationTicket(subMod), nil
}

func (d *driver) Query(ctx context.Context, opts ...repoopt.Option) ([]*entity.RemediationTicket, error) {
	rdb := d.dbProvider.ReadDB(ctx)
	subMods := make([]*rtmod.RemediationTicket, 0)

	rdb = rdb.Model(&rtmod.RemediationTicket{})
	rdb = repoopt.Aggregate(opts...).Apply(rdb)

	err := rdb.Find(&subMods).Error
	if err != nil {
		return nil, fmt.Errorf("query remediation tickets failed: %w", err)
	}

	return container.TransformSlice(subMods, d.cvter.ModelToEntity().RemediationTicket), nil
}

func (d *driver) Count(ctx context.Context, opts ...repoopt.Option) (int64, error) {
	rdb := d.dbProvider.ReadDB(ctx).Model(&rtmod.RemediationTicket{})
	rdb = repoopt.Aggregate(opts...).Apply(rdb)

	var count int64
	err := rdb.Count(&count).Error
	if err != nil {
		return 0, fmt.Errorf("count remediation tickets failed: %w", err)
	}

	return count, nil
}

func (d *driver) Patch(ctx context.Context, id uint64, ticket *entity.RemediationTicket) (*entity.RemediationTicket, error) {
	wdb := d.dbProvider.WriteDB(ctx)
	subMod := d.cvter.EntityToModel().RemediationTicket(ticket)

	err := wdb.Session(&gorm.Session{FullSaveAssociations: false}).Model(subMod).Updates(subMod).Error
	if err != nil {
		return nil, fmt.Errorf("patch remediationticket failed: %w", err)
	}

	// fill back id
	return d.cvter.ModelToEntity().RemediationTicket(subMod), nil
}