package model

import (
	"context"
	"time"

	"github.com/redis/go-redis/v9"

	"spark-server/internal/pkg/errs"
)

const (
	emailCodeKeyPrefix = "auth:email-code:"
	emailCodeCDPrefix  = "auth:email-cd:"
)

type RedisCodes struct {
	rdb *redis.Client
}

func NewRedisCodes(rdb *redis.Client) *RedisCodes {
	return &RedisCodes{rdb: rdb}
}

func (r *RedisCodes) Put(ctx context.Context, email, code string, ttlSeconds int) error {
	if r == nil || r.rdb == nil {
		return errs.ErrAvailable
	}
	if err := r.rdb.Set(ctx, emailCodeKeyPrefix+email, code, time.Duration(ttlSeconds)*time.Second).Err(); err != nil {
		return errs.ErrAvailable.WithError("email-code", err)
	}
	return nil
}

func (r *RedisCodes) Get(ctx context.Context, email string) (string, error) {
	if r == nil || r.rdb == nil {
		return "", errs.ErrAvailable
	}
	v, err := r.rdb.Get(ctx, emailCodeKeyPrefix+email).Result()
	if err == redis.Nil {
		return "", nil
	}
	if err != nil {
		return "", errs.ErrAvailable.WithError("email-code", err)
	}
	return v, nil
}

func (r *RedisCodes) Del(ctx context.Context, email string) error {
	if r == nil || r.rdb == nil {
		return errs.ErrAvailable
	}
	if err := r.rdb.Del(ctx, emailCodeKeyPrefix+email).Err(); err != nil {
		return errs.ErrAvailable.WithError("email-code", err)
	}
	return nil
}

func (r *RedisCodes) SetCooldown(ctx context.Context, email string, ttlSeconds int) (bool, error) {
	if r == nil || r.rdb == nil {
		return false, errs.ErrAvailable
	}
	ok, err := r.rdb.SetNX(ctx, emailCodeCDPrefix+email, "1", time.Duration(ttlSeconds)*time.Second).Result()
	if err != nil {
		return false, errs.ErrAvailable.WithError("email-code", err)
	}
	return ok, nil
}