Skip to content

Add daily summary email opt-in #144

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
Sikkra wants to merge 1 commit into
base: main
Choose a base branch
from
Open

Add daily summary email opt-in #144

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
8 changes: 8 additions & 0 deletions alerts/package-lock.json
View file
Open in desktop

Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.

8 changes: 5 additions & 3 deletions alerts/package.json
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -6,10 +6,12 @@
"dev": "wrangler dev",
"deploy": "wrangler deploy",
"db:create": "wrangler d1 create turbolong-alerts",
"db:migrate": "wrangler d1 execute turbolong-alerts --file=src/schema.sql"
"db:migrate": "wrangler d1 execute turbolong-alerts --file=src/schema.sql",
"typecheck": "tsc --noEmit -p tsconfig.json"
},
"devDependencies": {
"wrangler": "^3.99.0",
"typescript": "^5.7.3"
"@cloudflare/workers-types": "^4.20260519.1",
"typescript": "^5.7.3",
"wrangler": "^3.99.0"
}
}
102 changes: 102 additions & 0 deletions alerts/src/email.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,43 @@ interface SendResult {
error?: string;
}

export interface DailySummaryRow {
poolName: string;
assetSymbol: string;
leverage: number;
equityUsd: number | null;
netApy: number;
healthFactor: number;
healthFactorDelta: number | null;
netYieldUsd: number | null;
}

function escapeHtml(value: string): string {
return value
.replace(/&/g, "&")
.replace(/</g, "&lt;")
.replace(/>/g, "&gt;")
.replace(/"/g, "&quot;");
}

function pct(value: number): string {
return `${value >= 0 ? "+" : ""}${value.toFixed(2)}%`;
}

function money(value: number | null): string {
if (value === null || !Number.isFinite(value)) return "--";
return `${value >= 0 ? "+" : "-"}$${Math.abs(value).toFixed(2)}`;
}

function hf(value: number): string {
return Number.isFinite(value) ? value.toFixed(3) : "inf";
}

function delta(value: number | null): string {
if (value === null || !Number.isFinite(value)) return "--";
return `${value >= 0 ? "+" : ""}${value.toFixed(3)}`;
}

async function sendEmail(env: Env, to: string, subject: string, html: string): Promise<SendResult> {
const res = await fetch("https://api.resend.com/emails", {
method: "POST",
Expand Down Expand Up @@ -100,3 +137,68 @@ export async function sendApyAlert(
html,
);
}

export async function sendDailySummaryEmail(
env: Env,
to: string,
opts: {
summaryUtcHour: number;
rows: DailySummaryRow[];
unsubscribeUrl: string;
appUrl: string;
},
): Promise<SendResult> {
const rows = opts.rows.map(row => {
const apyColor = row.netApy >= 0 ? "#0B8F5A" : "#D92D20";
return `
<tr>
<td style="padding: 8px 6px; border-bottom: 1px solid #e8e8ef;">${escapeHtml(row.poolName)}</td>
<td style="padding: 8px 6px; border-bottom: 1px solid #e8e8ef;">${escapeHtml(row.assetSymbol)} ${row.leverage}x</td>
<td style="padding: 8px 6px; border-bottom: 1px solid #e8e8ef; text-align: right;">${row.equityUsd === null ? "--" : `$${row.equityUsd.toFixed(2)}`}</td>
<td style="padding: 8px 6px; border-bottom: 1px solid #e8e8ef; text-align: right; color: ${apyColor}; font-weight: 700;">${pct(row.netApy)}</td>
<td style="padding: 8px 6px; border-bottom: 1px solid #e8e8ef; text-align: right;">${hf(row.healthFactor)}</td>
<td style="padding: 8px 6px; border-bottom: 1px solid #e8e8ef; text-align: right;">${delta(row.healthFactorDelta)}</td>
<td style="padding: 8px 6px; border-bottom: 1px solid #e8e8ef; text-align: right;">${money(row.netYieldUsd)}</td>
</tr>`;
}).join("");

const html = `
<!DOCTYPE html>
<html>
<head><meta charset="utf-8"></head>
<body style="font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; max-width: 720px; margin: 0 auto; padding: 32px 16px; color: #1a1a2e;">
<h2 style="margin: 0 0 8px;">Turbolong daily summary</h2>
<p style="font-size: 14px; color: #555; margin: 0 0 20px;">Scheduled for ${opts.summaryUtcHour.toString().padStart(2, "0")}:00 UTC. Yield is estimated from the latest Blend rates over the last 24 hours.</p>

<table style="width: 100%; border-collapse: collapse; font-size: 13px;">
<thead>
<tr style="background: #f8f8fc; color: #555;">
<th style="padding: 8px 6px; text-align: left;">Pool</th>
<th style="padding: 8px 6px; text-align: left;">Position</th>
<th style="padding: 8px 6px; text-align: right;">Equity</th>
<th style="padding: 8px 6px; text-align: right;">Net APY</th>
<th style="padding: 8px 6px; text-align: right;">HF</th>
<th style="padding: 8px 6px; text-align: right;">HF 24h</th>
<th style="padding: 8px 6px; text-align: right;">24h Yield</th>
</tr>
</thead>
<tbody>${rows}</tbody>
</table>

<p style="line-height: 1.6; color: #555; margin-top: 20px;">Open Turbolong to refresh position size or adjust leverage. The first daily summary shows "--" for HF delta because there is no previous digest baseline yet.</p>

<a href="${opts.appUrl}" style="display: inline-block; margin: 12px 0 20px; padding: 12px 28px; background: #2DE8A3; color: #0B0E14; text-decoration: none; border-radius: 8px; font-weight: 600;">Open Turbolong</a>

<p style="font-size: 12px; color: #aaa; margin-top: 24px;">
<a href="${opts.unsubscribeUrl}" style="color: #aaa;">Unsubscribe</a> from this summary.
</p>
</body>
</html>`.trim();

return sendEmail(
env,
to,
`Turbolong daily summary - ${opts.rows.length} position${opts.rows.length === 1 ? "" : "s"}`,
html,
);
}
Loading