/**
 * Default invoice email templates per language and per payment state. Used
 * when the user hasn't customised them in settings. Variables
 * ({{invoiceNumber}}, etc.) are substituted by `renderTemplate` at send time.
 *
 * There are two body variants per language:
 *   - "unpaid": includes the bank-transfer payment-reference hint.
 *   - "paid":   identical but with the bank-transfer hint removed (the order
 *               is already settled, so asking for a transfer reference would
 *               be confusing).
 *
 * The shop logo is rendered as an inline attachment with content-id
 * `invoice-logo`; the email sender attaches the logo bytes automatically
 * when the template (or any custom template) references that cid.
 */

const DE_HEAD = `\
<h2 style="margin:0 0 8px;font-family:Arial,Helvetica,sans-serif;"><span style="color:#0883DA">{{companyName}}</span></h2>
<h3 style="margin:0 0 16px;font-family:Arial,Helvetica,sans-serif;"><span style="color:#0883DA">Danke für deinen Einkauf!</span></h3>
<p style="font-family:Arial,Helvetica,sans-serif;font-size:14px;line-height:1.5;">
Die Rechnung befindet sich im Anhang.
</p>`;

const DE_FOOT = `\
<p style="margin-top:24px;">
<img src="cid:invoice-logo" alt="{{companyName}}" style="max-height:48px;">
</p>
<p style="font-family:Arial,Helvetica,sans-serif;font-size:13px;line-height:1.6;color:#0883DA;">
✉ <a href="mailto:{{shopEmail}}" style="color:#0883DA;">Kontakt</a><br>
🌐 <a href="{{shopWebsite}}" style="color:#0883DA;">{{shopWebsite}}</a>
</p>`;

const DE_PAYMENT_HINT = `\
<p style="font-family:Arial,Helvetica,sans-serif;font-size:14px;line-height:1.5;">
Bei Überweisung bitte die Rechnungs-Nummer als Referenz verwenden:
<strong>{{invoiceNumber}}</strong><br>
Besten Dank!
</p>`;

const DE_PAID_NOTE = `\
<p style="font-family:Arial,Helvetica,sans-serif;font-size:14px;line-height:1.5;">
Besten Dank!
</p>`;

const EN_HEAD = `\
<h2 style="margin:0 0 8px;font-family:Arial,Helvetica,sans-serif;"><span style="color:#0883DA">{{companyName}}</span></h2>
<h3 style="margin:0 0 16px;font-family:Arial,Helvetica,sans-serif;"><span style="color:#0883DA">Thank you for your purchase!</span></h3>
<p style="font-family:Arial,Helvetica,sans-serif;font-size:14px;line-height:1.5;">
Please find the invoice attached.
</p>`;

const EN_FOOT = `\
<p style="margin-top:24px;">
<img src="cid:invoice-logo" alt="{{companyName}}" style="max-height:48px;">
</p>
<p style="font-family:Arial,Helvetica,sans-serif;font-size:13px;line-height:1.6;color:#0883DA;">
✉ <a href="mailto:{{shopEmail}}" style="color:#0883DA;">Contact</a><br>
🌐 <a href="{{shopWebsite}}" style="color:#0883DA;">{{shopWebsite}}</a>
</p>`;

const EN_PAYMENT_HINT = `\
<p style="font-family:Arial,Helvetica,sans-serif;font-size:14px;line-height:1.5;">
When paying by bank transfer, please use the invoice number as the reference:
<strong>{{invoiceNumber}}</strong><br>
Thanks a lot!
</p>`;

const EN_PAID_NOTE = `\
<p style="font-family:Arial,Helvetica,sans-serif;font-size:14px;line-height:1.5;">
Thanks a lot!
</p>`;

// Unpaid (outstanding) bodies — keep the bank-transfer reference hint.
const DE_HTML_UNPAID = `${DE_HEAD}\n${DE_PAYMENT_HINT}\n${DE_FOOT}`;
const EN_HTML_UNPAID = `${EN_HEAD}\n${EN_PAYMENT_HINT}\n${EN_FOOT}`;

// Paid bodies — bank-transfer hint removed.
const DE_HTML_PAID = `${DE_HEAD}\n${DE_PAID_NOTE}\n${DE_FOOT}`;
const EN_HTML_PAID = `${EN_HEAD}\n${EN_PAID_NOTE}\n${EN_FOOT}`;

export const DEFAULT_EMAIL_SUBJECT_DE = "Rechnung {{invoiceNumber}} – {{companyName}}";
export const DEFAULT_EMAIL_SUBJECT_EN = "Invoice {{invoiceNumber}} – {{companyName}}";

// Backwards-compatible aliases (these are the "unpaid" variants, matching the
// historical single-template behaviour).
export const DEFAULT_EMAIL_BODY_DE = DE_HTML_UNPAID;
export const DEFAULT_EMAIL_BODY_EN = EN_HTML_UNPAID;

export const DEFAULT_EMAIL_BODY_DE_UNPAID = DE_HTML_UNPAID;
export const DEFAULT_EMAIL_BODY_EN_UNPAID = EN_HTML_UNPAID;
export const DEFAULT_EMAIL_BODY_DE_PAID = DE_HTML_PAID;
export const DEFAULT_EMAIL_BODY_EN_PAID = EN_HTML_PAID;