package dao

import (
	"context"
	"fmt"
	"model-gateway/consts/public"
	"model-gateway/model/dto"
	"model-gateway/model/entity"
	"strconv"
	"strings"

	"gitea.com/red-future/common/db/gfdb"
	"github.com/gogf/gf/v2/frame/g"
	"github.com/gogf/gf/v2/util/gconv"
)

var Model = &modelDao{}

type modelDao struct{}

// Insert 插入
func (d *modelDao) Insert(ctx context.Context, req *entity.AsynchModel) (id int64, err error) {
	m := new(entity.AsynchModel)
	err = gconv.Struct(req, &m)
	if err != nil {
		return
	}
	r, err := gfdb.DB(ctx, public.DbNameModelGateway).Model(ctx, public.TableNameModel).
		Insert(m)
	if err != nil {
		return
	}
	return r.LastInsertId()
}

// Update 更新
func (d *modelDao) Update(ctx context.Context, req *entity.AsynchModel) (rows int64, err error) {
	r, err := gfdb.DB(ctx, public.DbNameModelGateway).Model(ctx, public.TableNameModel).
		OmitEmpty().
		Data(&req).
		Where(entity.AsynchModelCol.Id, req.Id).
		Update()
	if err != nil {
		return
	}
	return r.RowsAffected()
}

// Delete 删除
func (d *modelDao) Delete(ctx context.Context, req *entity.AsynchModel) (rows int64, err error) {
	r, err := gfdb.DB(ctx, public.DbNameModelGateway).Model(ctx, public.TableNameModel).
		OmitEmpty().
		Where(entity.AsynchModelCol.Id, req.Id).
		Delete()
	if err != nil {
		return
	}
	return r.RowsAffected()
}

// Get 按ID获取（带租户隔离，只查当前租户）
func (d *modelDao) Get(ctx context.Context, req *entity.AsynchModel, fields ...string) (m *entity.AsynchModel, err error) {
	//r, err := gfdb.DB(ctx, public.DbNameModelGateway).Model(ctx, public.TableNameModel).
	//	OmitEmpty().
	//	Where(entity.AsynchModelCol.Id, req.Id).
	//	Where(entity.AsynchModelCol.Creator, req.Creator).
	//	Where(entity.AsynchModelCol.IsChatModel, req.IsChatModel).
	//	Where(entity.AsynchModelCol.ModelName, req.ModelName).
	//	Fields(fields).One()
	//if err != nil {
	//	return
	//}
	//err = r.Struct(&m)

	var whereCondition strings.Builder
	var queryParams []interface{}
	if !g.IsEmpty(req.Id) {
		whereCondition.WriteString(fmt.Sprintf(" AND %s = (?) ", entity.AsynchModelCol.Id))
		queryParams = append(queryParams, req.Id)
	}
	if !g.IsEmpty(req.Creator) {
		whereCondition.WriteString(fmt.Sprintf(" AND %s = (?) ", entity.AsynchModelCol.Creator))
		queryParams = append(queryParams, req.Creator)
	}
	if !g.IsEmpty(req.IsChatModel) {
		whereCondition.WriteString(fmt.Sprintf(" AND %s = (?) ", entity.AsynchModelCol.IsChatModel))
		queryParams = append(queryParams, req.IsChatModel)
	}
	if !g.IsEmpty(req.ModelName) {
		whereCondition.WriteString(fmt.Sprintf(" AND %s = (?) ", entity.AsynchModelCol.ModelName))
		queryParams = append(queryParams, req.ModelName)
	}
	// 完整 SQL
	sql := `SELECT * FROM "asynch_models" WHERE "deleted_at" IS NULL` + whereCondition.String()
	r, err := gfdb.DB(ctx, public.DbNameModelGateway).GetAll(ctx, sql, queryParams...)
	if err != nil {
		return
	}
	var i []*entity.AsynchModel
	if err = r.Structs(&i); err != nil {
		return nil, err
	}
	for _, item := range i {
		m = item
	}
	return
}

// GetByAcrossTenant 按ID获取（跨租户，查所有租户）
func (d *modelDao) GetByAcrossTenant(ctx context.Context, req *entity.AsynchModel, fields ...string) (m *entity.AsynchModel, err error) {
	r, err := gfdb.DB(ctx, public.DbNameModelGateway).Model(ctx, public.TableNameModel).
		NoTenantId(ctx).
		OmitEmpty().
		Where(entity.AsynchModelCol.Id, req.Id).
		Where(entity.AsynchModelCol.Creator, req.Creator).
		Where(entity.AsynchModelCol.IsChatModel, req.IsChatModel).
		Where(entity.AsynchModelCol.ModelName, req.ModelName).
		Fields(fields).One()
	if err != nil {
		return
	}
	err = r.Struct(&m)
	return
}

// GetByCreatorAndPlatform 按创建者、平台获取
func (d *modelDao) GetByCreatorAndPlatform(ctx context.Context, req *dto.ListModelReq) (list []*entity.AsynchModel, total int, err error) {
	sql := `
SELECT DISTINCT ON (model_name) *
FROM asynch_models
WHERE deleted_at IS NULL 
  AND (? = '' OR model_name LIKE ?)
`
	args := []any{
		req.ModelName, "%" + req.ModelName + "%",
	}

	// modelType: 传 6 模糊匹配 6%
	if req.ModelType > 0 {
		prefix := strconv.Itoa(req.ModelType)[:1] // 截取第一位
		sql += ` AND model_type::text LIKE ? `
		args = append(args, prefix+"%")
	}

	if !g.IsEmpty(req.IsPrivate) {
		sql += ` AND is_private = ? `
		args = append(args, req.IsPrivate)
	}

	if req.IsOwner != nil && *req.IsOwner == 0 {
		if req.Enabled != nil && *req.Enabled == 1 {
			sql += ` AND creator = ? AND is_owner = ? AND enabled=1 `
		} else if req.Enabled != nil && *req.Enabled == 0 {
			sql += ` AND creator = ? AND is_owner = ? AND enabled=0 `
		} else {
			sql += ` AND creator = ? AND is_owner = ? `
		}
		args = append(args, req.Creator, req.IsOwner)
	} else if req.IsOwner != nil && *req.IsOwner == 1 {
		if req.Enabled != nil && *req.Enabled == 1 {
			sql += ` AND ((creator = ? AND is_owner = ? AND enabled=1) OR (is_owner = 0 AND enabled=1)) `
		} else if req.Enabled != nil && *req.Enabled == 0 {
			sql += ` AND ((creator = ? AND is_owner = ? AND enabled=0) OR (is_owner = 0 AND enabled=1)) `
		} else {
			sql += ` AND ((creator = ? AND is_owner = ?) OR (is_owner = 0 AND enabled=1)) `
		}
		args = append(args, req.Creator, req.IsOwner)
	}

	sql += ` ORDER BY model_name, is_owner DESC, created_at DESC`

	r, err := gfdb.DB(ctx, public.DbNameModelGateway).GetAll(ctx, sql, args...)
	if err != nil {
		return nil, 0, err
	}

	err = r.Structs(&list)
	if err != nil {
		return nil, 0, err
	}

	total = len(list)
	return
}

// GetByModelNameForTenant 后台任务使用：按 tenant_id + model_name 查询，不依赖 gfdb Hook/Trace/用户上下文
func (d *modelDao) GetByModelNameForTenant(ctx context.Context, tenantId uint64, modelName string) (m *entity.AsynchModel, err error) {
	r, err := gfdb.DB(ctx, public.DbNameModelGateway).GetAll(ctx,
		"SELECT * FROM "+public.TableNameModel+" WHERE tenant_id=? AND model_name=? AND deleted_at IS NULL LIMIT 1",
		tenantId, modelName,
	)
	if err != nil {
		return nil, err
	}
	if r.IsEmpty() {
		return nil, nil
	}
	var list []*entity.AsynchModel
	if err := r.Structs(&list); err != nil {
		return nil, err
	}
	if len(list) == 0 {
		return nil, nil
	}
	return list[0], nil
}