package clause_test

import (
	"fmt"
	"testing"

	"gorm.io/gorm/clause"
)

func TestGroupBy(t *testing.T) {
	results := []struct {
		Clauses []clause.Interface
		Result  string
		Vars    []interface{}
	}{
		{
			[]clause.Interface{clause.Select{}, clause.From{}, clause.GroupBy{
				Columns: []clause.Column{{Name: "role"}},
				Having:  []clause.Expression{clause.Eq{"role", "admin"}},
			}},

					Joins: []clause.Join{
						{
							Type:  clause.RightJoin,
							Table: clause.Table{Name: "profiles"},
							ON: clause.Where{
								[]clause.Expression{clause.Eq{clause.Column{Table: "profiles", Name: "email"}, clause.Column{Table: clause.CurrentTable, Name: "email"}}},
							},
						},
					},
				}, clause.From{
					Joins: []clause.Join{
						{
							Type:  clause.InnerJoin,

			}},
			"SELECT * FROM `users` WHERE `users`.`id` = ? OR `name` <> ?",
			[]interface{}{"1", "jinzhu"},
		},
		{
			[]clause.Interface{clause.Select{}, clause.From{}, clause.Where{

		t.Errorf("Not error should happen when updating with gorm expr, but got %v", err)
	}

	if err := DB.Model(&results[1]).Clauses(clause.Returning{Columns: []clause.Column{{Name: "age"}}}).Updates(map[string]interface{}{"age": gorm.Expr("age + ?", 100)}).Error; err != nil {
		t.Errorf("Not error should happen when updating with gorm expr, but got %v", err)
	}

		}
	} else {
		builder.WriteByte('*')
	}
}

func (s Select) MergeClause(clause *Clause) {
	if s.Expression != nil {
		if s.Distinct {
			if expr, ok := s.Expression.(Expr); ok {
				expr.SQL = "DISTINCT " + expr.SQL
				clause.Expression = expr
				return
			}
		}

		clause.Expression = s.Expression
	} else {
		clause.Expression = s
	}
}

	if len(foreignKeys) == 1 {
		for idx, r := range foreignValues {
			queryValues[idx] = r[0]
		}

		return clause.Column{Table: table, Name: foreignKeys[0]}, queryValues
	}

	columns := make([]clause.Column, len(foreignKeys))
	for idx, key := range foreignKeys {
		columns[idx] = clause.Column{Table: table, Name: key}
	}

	for idx, r := range foreignValues {
		queryValues[idx] = r
	}

	sql.NullString
}

type Point struct {
	X, Y int
}

func (point Point) GormDataType() string {
	return "geo"
}

func (point Point) GormValue(ctx context.Context, db *gorm.DB) clause.Expr {
	return clause.Expr{
		SQL:  "ST_PointFromText(?)",
		Vars: []interface{}{fmt.Sprintf("POINT(%d %d)", point.X, point.Y)},
	}
}

func TestGORMValuer(t *testing.T) {
	type UserWithPoint struct {
		Name  string

		clauses := []clause.Interface{
			clause.Select{},
			clause.From{},
			clause.Where{Exprs: []clause.Expression{
				clause.Eq{Column: clause.PrimaryColumn, Value: "1"},
				clause.Gt{Column: "age", Value: 18},
				clause.Or(clause.Neq{Column: "name", Value: "jinzhu"}),
			}},
			clause.Where{Exprs: []clause.Expression{

						where.Exprs = []clause.Expression{clause.And(where.Exprs...)}
						c.Expression = where
						stmt.Clauses["WHERE"] = c
						break
					}
				}
			}
		}

		stmt.AddClause(clause.Where{Exprs: []clause.Expression{
			clause.Eq{Column: clause.Column{Table: clause.CurrentTable, Name: sd.Field.DBName}, Value: sd.ZeroValue},
		}})

	tx = db.getInstance()
	tx.Statement.Model = value
	return
}

// Clauses Add clauses
//
// This supports both standard clauses (clause.OrderBy, clause.Limit, clause.Where) and more
// advanced techniques like specifying lock strength and optimizer hints. See the
// [docs] for more depth.
//
//	// add a simple limit clause
//	db.Clauses(clause.Limit{Limit: 1}).Find(&User{})
//	// tell the optimizer to use the `idx_user_name` index