package mysql

import (
	"encoding/json"
	"fmt"
	"os"
	"strings"

	"git.gocasts.ir/ebhomengo/niki/patientapp/service/entity"
)

type whereClause struct {
	sql  strings.Builder
	args []any
}

func (w *whereClause) add(cond string, args ...any) {
	if w.sql.Len() == 0 {
		w.sql.WriteString(" WHERE ")
	} else {
		w.sql.WriteString(" AND ")
	}
	w.sql.WriteString(cond)
	w.args = append(w.args, args...)
}

func (w *whereClause) String() string { return w.sql.String() }

func clampLimitOffset(limit, offset int) (int, int) {
	if limit <= 0 {
		limit = 50
	}
	if limit > 100 {
		limit = 100
	}
	if offset < 0 {
		offset = 0
	}
	return limit, offset
}

func LoadPatientsFromJSON(filePath string) ([]entity.Patient, error) {
	// Read the file
	data, err := os.ReadFile(filePath)
	if err != nil {
		return nil, fmt.Errorf("failed to read file: %w", err)
	}

	// Unmarshal into slice of Patient
	var patients []entity.Patient
	if err := json.Unmarshal(data, &patients); err != nil {
		return nil, fmt.Errorf("failed to unmarshal JSON: %w", err)
	}

	return patients, nil
}