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onasty @ 10fe031

a one-time notes service

onasty/mailer/template.go (view raw)

Olexandr Smirnov Olexandr Smirnov
ss2316544@gmail.com
feat(api): change email (#191)..., 9 months ago
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package main
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import (
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	"errors"
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	"fmt"
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)
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var ErrInvalidTemplate = errors.New("failed to get template")
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type Template struct {
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	Subject string
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	Body    string
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}
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type TemplateFunc func(args map[string]string) Template
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func getTemplate(appURL, frontendURL string, templateName string) (TemplateFunc, error) {
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	switch templateName {
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	case "email_verification":
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		return emailVerificationTemplate(appURL), nil
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	case "reset_password":
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		return passwordResetTemplate(frontendURL), nil
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	case "confirm_email_change":
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		return confirmEmailChangeTemplate(appURL), nil
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	default:
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		return nil, ErrInvalidTemplate
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	}
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}
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func emailVerificationTemplate(appURL string) TemplateFunc {
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	return func(opts map[string]string) Template {
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		link := fmt.Sprintf("%[1]s/api/v1/auth/verify/%[2]s", appURL, opts["token"])
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		return Template{
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			Subject: "Onasty: verify your email",
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			Body: fmt.Sprintf(`To verify your email, please follow this link:
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<a href="%[1]s">%[1]s</a>
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<br>
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<br>
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This link will expire after 24 hours.`, link),
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		}
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	}
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}
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func passwordResetTemplate(frontendURL string) TemplateFunc {
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	return func(opts map[string]string) Template {
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		link := fmt.Sprintf("%[1]s/auth?token=%[2]s", frontendURL, opts["token"])
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		return Template{
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			Subject: "Onasty: reset your password",
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			Body: fmt.Sprintf(`To reset your password, use this api:
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<a href="%[1]s">%[1]s</a>
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<br>
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<br>
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This link will expire after an hour.`, link),
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		}
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	}
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}
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func confirmEmailChangeTemplate(appURL string) TemplateFunc {
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	return func(opts map[string]string) Template {
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		link := fmt.Sprintf("%[1]s/api/v1/auth/change-email/%[2]s", appURL, opts["token"])
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		return Template{
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			Subject: "Onasty: confirm your email change",
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			Body: fmt.Sprintf(`
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It seems like you have changed your email address to %[1]s.
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<br>
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To confirm this change, please follow this link:
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<a href="%[2]s">%[2]s</a>
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<br>
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<br>
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If you did not request email change, you can ignore this message.
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<br>
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This link will expire after 24 hours.
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`, opts["email"], link),
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		}
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	}
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}