package worker

import (
	"api.qobiltu.id/assets"
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"github.com/hibiken/asynq"
	"html/template"
	"log/slog"
)

const (
	TaskSendForgotPasswordEmailMaxRetry = 5
	TaskSendForgotPasswordEmail         = "task:send_forgot_password_email"
	TaskSendForgotPasswordEmailSubject  = "Permintaan Reset Password"
)

type PayloadSendForgotPasswordEmail struct {
	EmailAddress        string `json:"email_address"`
	ResetToken          string `json:"reset_token"`
	ExpirationInMinutes int    `json:"expiration_in_minutes"`
	Subject             string `json:"subject"`
	AppName             string `json:"app_name"`
}

func (d *RedisTaskDistributor) DistributeTaskSendForgotPasswordEmail(
	ctx context.Context,
	payload *PayloadSendForgotPasswordEmail,
	opts ...asynq.Option,
) error {
	jsonPayload, err := json.Marshal(payload)
	if err != nil {
		return fmt.Errorf("failed to marshal task payload: %w", err)
	}

	task := asynq.NewTask(TaskSendForgotPasswordEmail, jsonPayload, opts...)

	_, err = d.client.EnqueueContext(ctx, task)
	if err != nil {
		return fmt.Errorf("failed to enqueue task: %w", err)
	}

	return nil
}

func (p *RedisTaskProcessor) ProcessTaskSendForgotPasswordEmail(ctx context.Context, task *asynq.Task) error {
	var payload PayloadSendForgotPasswordEmail
	if err := json.Unmarshal(task.Payload(), &payload); err != nil {
		return fmt.Errorf("failed to unmarshal payload: %w", asynq.SkipRetry)
	}

	var tmpl *template.Template
	tmpl, err := template.ParseFS(assets.EmbeddedFiles, assets.EmailForgotPasswordTemplatePath)
	if err != nil {
		return fmt.Errorf("failed to parse forgot password email template: %w", err)
	}
	var body bytes.Buffer
	if err := tmpl.ExecuteTemplate(&body, "htmlBody", payload); err != nil {
		return fmt.Errorf("failed to execute forgot password email template: %w", err)
	}
	htmlContent := body.String()

	slog.Info("Sending forgot password email", slog.String("email", payload.EmailAddress))

	err = p.emailSender.Send(payload.EmailAddress, payload.Subject, htmlContent, payload)
	if err != nil {
		return fmt.Errorf("failed to send forgot password email: %w", err)
	}

	slog.Info("Forgot password email sent successfully", slog.String("email", payload.EmailAddress))

	return nil
}