Claudio Ortolina
336 lines
10 KiB
TypeScript
336 lines
10 KiB
TypeScript
/**
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* Production Log Viewer
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*
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* Fetches and displays application logs from the Coolify API.
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*
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* Credentials are read from environment variables following Hurl conventions:
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* HURL_VARIABLE_coolify_host
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* HURL_VARIABLE_coolify_app_uuid
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* HURL_VARIABLE_coolify_token
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*
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* Usage:
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* /prod-logs
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*/
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import type { ExtensionAPI } from "@mariozechner/pi-coding-agent";
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import { BorderedLoader, DynamicBorder } from "@mariozechner/pi-coding-agent";
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import {
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matchesKey,
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Key,
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truncateToWidth,
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} from "@mariozechner/pi-tui";
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// ── Types ───────────────────────────────────────────────────────────────────
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interface CoolifyLogsResponse {
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logs?: string | string[];
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}
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// ── Log Viewer Component ────────────────────────────────────────────────────
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class LogViewer {
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lines: string[];
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private scrollOffset: number = 0;
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private cachedWidth?: number;
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private cachedLines?: string[];
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private visibleHeight: number;
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public onClose?: () => void;
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public onRefresh?: () => void;
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constructor(lines: string[], visibleHeight: number) {
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this.lines = lines;
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this.visibleHeight = Math.max(1, visibleHeight);
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}
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/** Replace lines and reset scroll to top. */
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updateLines(lines: string[], chromeHeight: number): void {
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this.lines = lines;
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this.scrollOffset = 0;
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this.visibleHeight = Math.min(lines.length, Math.max(10, process.stdout.rows - chromeHeight));
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this.invalidate();
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}
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get offset(): number {
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return this.scrollOffset;
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}
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get total(): number {
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return this.lines.length;
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}
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handleInput(data: string): void {
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if (matchesKey(data, Key.escape) || matchesKey(data, "q")) {
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this.onClose?.();
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return;
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}
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if (matchesKey(data, "r")) {
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this.onRefresh?.();
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return;
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}
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if (matchesKey(data, Key.up) || matchesKey(data, "k")) {
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this.scrollOffset = Math.max(0, this.scrollOffset - 1);
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this.invalidate();
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} else if (matchesKey(data, Key.down) || matchesKey(data, "j")) {
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const maxOffset = Math.max(0, this.lines.length - this.visibleHeight);
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this.scrollOffset = Math.min(maxOffset, this.scrollOffset + 1);
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this.invalidate();
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} else if (matchesKey(data, Key.pageUp)) {
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this.scrollOffset = Math.max(0, this.scrollOffset - this.visibleHeight);
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this.invalidate();
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} else if (matchesKey(data, Key.pageDown) || matchesKey(data, Key.ctrl("f"))) {
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const maxOffset = Math.max(0, this.lines.length - this.visibleHeight);
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this.scrollOffset = Math.min(maxOffset, this.scrollOffset + this.visibleHeight);
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this.invalidate();
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} else if (matchesKey(data, Key.ctrl("b"))) {
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this.scrollOffset = Math.max(0, this.scrollOffset - this.visibleHeight);
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this.invalidate();
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} else if (matchesKey(data, Key.home) || matchesKey(data, "g")) {
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// "g" twice = go to top; single "g" handled as first press
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this.scrollOffset = 0;
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this.invalidate();
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} else if (matchesKey(data, Key.end) || matchesKey(data, "G")) {
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this.scrollOffset = Math.max(0, this.lines.length - this.visibleHeight);
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this.invalidate();
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}
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}
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render(width: number): string[] {
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if (this.cachedLines && this.cachedWidth === width) {
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return this.cachedLines;
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}
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const padLen = String(this.lines.length).length;
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const visibleLines = this.lines.slice(
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this.scrollOffset,
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this.scrollOffset + this.visibleHeight,
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);
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const result: string[] = [];
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for (let i = 0; i < visibleLines.length; i++) {
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const lineNum = this.scrollOffset + i + 1;
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const numStr = String(lineNum).padStart(padLen, " ");
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const prefix = ` ${numStr} │ `;
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const content = truncateToWidth(
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`${prefix}${visibleLines[i]}`,
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width,
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"",
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);
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result.push(content);
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}
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// Pad to visibleHeight if fewer lines
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while (result.length < this.visibleHeight) {
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result.push("~");
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}
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this.cachedWidth = width;
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this.cachedLines = result;
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return result;
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}
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invalidate(): void {
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this.cachedWidth = undefined;
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this.cachedLines = undefined;
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}
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}
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// ── Helpers ─────────────────────────────────────────────────────────────────
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function resolveVar(name: string): string | undefined {
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return process.env[`HURL_VARIABLE_${name}`];
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}
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async function fetchLogs(
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host: string,
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appUuid: string,
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token: string,
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signal?: AbortSignal,
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): Promise<string[]> {
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const url = `${host}/api/v1/applications/${appUuid}/logs`;
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const response = await fetch(url, {
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headers: { Authorization: `Bearer ${token}` },
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signal,
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});
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if (!response.ok) {
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throw new Error(
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`Coolify API returned ${response.status} ${response.statusText}`,
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);
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}
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const data: CoolifyLogsResponse = await response.json();
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if (data.logs === undefined || data.logs === null) {
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return ["(no logs returned)"];
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}
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if (Array.isArray(data.logs)) {
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return data.logs;
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}
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if (typeof data.logs === "string") {
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return data.logs.split("\n");
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}
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return ["(unexpected log format)"];
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}
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// ── Extension ───────────────────────────────────────────────────────────────
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export default function prodLogsExtension(pi: ExtensionAPI) {
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pi.registerCommand("prod-logs", {
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description: "View production application logs via Coolify API",
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handler: async (_args, ctx) => {
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// ── Validate credentials ──────────────────────────────────────────
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const host = resolveVar("coolify_host");
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const appUuid = resolveVar("coolify_app_uuid");
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const token = resolveVar("coolify_token");
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const missing: string[] = [];
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if (!host) missing.push("HURL_VARIABLE_coolify_host");
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if (!appUuid) missing.push("HURL_VARIABLE_coolify_app_uuid");
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if (!token) missing.push("HURL_VARIABLE_coolify_token");
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if (missing.length > 0) {
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ctx.ui.notify(
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`Missing environment variables: ${missing.join(", ")}`,
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"error",
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);
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return;
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}
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// ── Fetch logs with loader UI ─────────────────────────────────────
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const logLines = await ctx.ui.custom<string[] | null>(
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(tui, theme, _kb, done) => {
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const loader = new BorderedLoader(
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tui,
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theme,
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"Fetching production logs...",
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);
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loader.onAbort = () => done(null);
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fetchLogs(host!, appUuid!, token!, loader.signal)
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.then(done)
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.catch((err) => {
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console.error("[prod-logs] Fetch failed:", err);
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done(null);
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});
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return loader;
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},
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);
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if (logLines === null) {
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ctx.ui.notify("Cancelled or fetch failed — check logs for details", "info");
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return;
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}
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if (logLines.length === 0) {
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ctx.ui.notify("No log entries found", "info");
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return;
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}
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// Recent entries first
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logLines.reverse();
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// ── Display logs in scrollable viewer ─────────────────────────────
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// Reserve lines for borders, header, footer, scroll info
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const chromeHeight = 10;
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let logLinesMut = logLines;
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let loading = false;
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const visibleLogLines = () =>
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Math.min(logLinesMut.length, Math.max(10, process.stdout.rows - chromeHeight));
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const viewer = new LogViewer(logLinesMut, visibleLogLines());
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const doRefresh = (tui: { requestRender: () => void }) => {
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if (loading) return;
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loading = true;
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tui.requestRender();
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fetchLogs(host!, appUuid!, token!)
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.then((lines) => {
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lines.reverse();
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logLinesMut = lines;
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viewer.updateLines(lines, chromeHeight);
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loading = false;
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tui.requestRender();
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})
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.catch((err) => {
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console.error("[prod-logs] Refresh failed:", err);
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loading = false;
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tui.requestRender();
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});
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};
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await ctx.ui.custom<void>((tui, theme, _kb, done) => {
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viewer.onClose = () => done();
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viewer.onRefresh = () => doRefresh(tui);
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return {
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render(width: number) {
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// Update scroll info
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const pct = viewer.total > 0
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? Math.round((viewer.offset / viewer.total) * 100)
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: 0;
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const from = viewer.offset + 1;
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const to = Math.min(
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viewer.offset + visibleLogLines(),
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viewer.total,
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);
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// Build result manually
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const result: string[] = [];
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const border = theme.fg("accent", "─".repeat(width));
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result.push(border);
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result.push(truncateToWidth(theme.fg("accent", theme.bold(" Production Logs")), width, ""));
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const countText = loading
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? " Refreshing..."
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: ` ${logLinesMut.length} lines`;
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result.push(truncateToWidth(theme.fg("muted", countText), width, ""));
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result.push(truncateToWidth(theme.fg("dim", "─".repeat(40)), width, ""));
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const infoText = ` Lines ${from}-${to} of ${logLinesMut.length} (${pct}%)`;
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result.push(truncateToWidth(theme.fg("dim", infoText), width, ""));
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// Log lines
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const logRendered = viewer.render(width);
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result.push(...logRendered);
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const helpLine = loading
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? " Refreshing..."
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: " ↑↓/jk scroll · PgUp/PgDn page · Home/End jump · r refresh · Esc close";
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result.push(truncateToWidth(
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theme.fg("dim", helpLine),
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width,
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"",
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));
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result.push(border);
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return result;
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},
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invalidate() {
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viewer.invalidate();
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},
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handleInput(data: string) {
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viewer.handleInput(data);
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tui.requestRender();
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},
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};
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});
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ctx.ui.notify("Log viewer closed", "info");
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},
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});
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}
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