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{ runMigrations } from \"./database/migrations.ts\";\nimport { getAllEndpoints, performCheck } from \"./database/queries.ts\";\n\n// Runs on a schedule to check all endpoints automatically\nexport default async function (_interval: Interval) {\n await runMigrations();\n const endpoints = await getAllEndpoints();\n console.log(`Polling ${endpoints.length} endpoint(s)...`);\n for (const ep of endpoints) {\n try {\n const result = await performCheck(ep);\n console.log(`[${ep.name}] status=${result.status} changed=${result.changed} valid_json=${result.is_valid_json}`);\n } catch (e: any) {\n console.error(`[${ep.name}] poller error: ${e.message}`);\n }\n }\n}\n","createdAt",["D",1775709624050],"branchVersion","branchId","1b6bb3e0-33cd-11f1-9c01-42b51c65c3df","id","1b6b4112-33cd-11f1-9c01-42b51c65c3df","json-endpoint-tracker",["D",1775709144649],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","Track and monitor JSON endpoints with live status 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{ Hono } from \"npm:hono\";\nimport { sqlite } from \"https://esm.town/v/std/sqlite/main.ts\";\nimport { parseVal, serveFile } from \"https://esm.town/v/std/utils/index.ts\";\n\nconst app = new Hono();\napp.onError((err) => Promise.reject(err));\n\n// Initialize DB\nawait sqlite.execute(`\n CREATE TABLE IF NOT EXISTS endpoints (\n id INTEGER PRIMARY KEY AUTOINCREMENT,\n name TEXT NOT NULL,\n url TEXT NOT NULL,\n created_at TEXT DEFAULT (datetime('now'))\n )\n`);\n\nawait sqlite.execute(`\n CREATE TABLE IF NOT EXISTS checks (\n id INTEGER PRIMARY KEY AUTOINCREMENT,\n endpoint_id INTEGER,\n status INTEGER,\n response_time_ms INTEGER,\n is_valid_json INTEGER,\n error TEXT,\n checked_at TEXT DEFAULT (datetime('now'))\n )\n`);\n\napp.get(\"/source\", (c) => c.redirect(parseVal().links.self.val));\n\n// Check an endpoint\nasync function checkEndpoint(url: string) {\n const start = Date.now();\n try {\n const res = await fetch(url, { signal: AbortSignal.timeout(8000) });\n const elapsed = Date.now() - start;\n let isValidJson = false;\n try {\n await res.clone().json();\n isValidJson = true;\n } catch {}\n return { status: res.status, response_time_ms: elapsed, is_valid_json: isValidJson, error: null };\n } catch (e: any) {\n return { status: 0, response_time_ms: Date.now() - start, is_valid_json: false, error: e.message };\n }\n}\n\n// API: list endpoints with latest check\napp.get(\"/api/endpoints\", async (c) => {\n const endpoints = await sqlite.execute(`SELECT * FROM endpoints ORDER BY created_at DESC`);\n const result = [];\n for (const ep of endpoints.rows as any[]) {\n const latest = await sqlite.execute({\n sql: `SELECT * FROM checks WHERE endpoint_id = ? ORDER BY checked_at DESC LIMIT 1`,\n args: [ep.id],\n });\n result.push({ ...ep, latest_check: (latest.rows as any[])[0] || null });\n }\n return c.json(result);\n});\n\n// API: add endpoint\napp.post(\"/api/endpoints\", async (c) => {\n const { name, url } = await c.req.json();\n if (!name || !url) return c.json({ error: \"name and url required\" }, 400);\n const ins = await sqlite.execute({ sql: `INSERT INTO endpoints (name, url) VALUES (?, ?)`, args: [name, url] });\n return c.json({ id: ins.lastInsertRowid, name, url });\n});\n\n// API: delete endpoint\napp.delete(\"/api/endpoints/:id\", async (c) => {\n const id = c.req.param(\"id\");\n await sqlite.execute({ sql: `DELETE FROM checks WHERE endpoint_id = ?`, args: [id] });\n await sqlite.execute({ sql: `DELETE FROM endpoints WHERE id = ?`, args: [id] });\n return c.json({ ok: true });\n});\n\n// API: check now\napp.post(\"/api/endpoints/:id/check\", async (c) => {\n const id = Number(c.req.param(\"id\"));\n const ep = await sqlite.execute({ sql: `SELECT * FROM endpoints WHERE id = ?`, args: [id] });\n if (!(ep.rows as any[]).length) return c.json({ error: \"not found\" }, 404);\n const { url } = (ep.rows as any[])[0];\n const result = await checkEndpoint(url);\n await sqlite.execute({\n sql: `INSERT INTO checks (endpoint_id, status, response_time_ms, is_valid_json, error) VALUES (?, ?, ?, ?, ?)`,\n args: [id, result.status, result.response_time_ms, result.is_valid_json ? 1 : 0, result.error],\n });\n return c.json(result);\n});\n\n// API: history for endpoint\napp.get(\"/api/endpoints/:id/history\", async (c) => {\n const id = c.req.param(\"id\");\n const rows = await sqlite.execute({\n sql: `SELECT * FROM checks WHERE endpoint_id = ? ORDER BY checked_at DESC LIMIT 20`,\n args: [id],\n });\n return c.json(rows.rows);\n});\n\n// Serve frontend HTML\napp.get(\"/*\", (c) => serveFile(\"/frontend/index.html\", import.meta.url));\n\nexport default app.fetch;\n",[146],"28648a0e-33cd-11f1-ba79-42b51c65c3df","README.md","28648aae-33cd-11f1-ba79-42b51c65c3df",["D",1775709166393],"# json-endpoint-tracker",[154],"c6a6e5a4-33cd-11f1-a7ac-42b51c65c3df","frontend","941eb54b-2072-4e4e-acc4-185931734af6",3,["D",1775709431907],"directory",[160],"2b5f19bc-33ce-11f1-96e9-42b51c65c3df","database","830171b4-dc9b-4408-ac45-48e63c9edaff",5,["D",1775709600896],[167],"pulls","branches","forks","envVars",{"_179":67,"_181":67},"connections",{"_179":67,"_180":67},"count","unfilledCount","emptyCount",{"_47":166,"_37":167,"_35":168,"_140":-5,"_45":46,"_44":169,"_141":63,"_42":226,"_13":67,"_38":164,"_40":-5,"_29":30,"_143":-5,"_191":227,"_32":228},{"_47":219,"_37":220,"_35":221,"_140":168,"_45":46,"_44":169,"_141":63,"_42":222,"_13":67,"_38":215,"_40":223,"_29":30,"_143":-5,"_191":224,"_32":225},{"_47":210,"_37":211,"_35":212,"_140":168,"_45":46,"_44":213,"_141":30,"_42":214,"_13":67,"_38":215,"_40":216,"_29":30,"_143":-5,"_191":217,"_32":218},{"_47":159,"_37":160,"_35":161,"_140":-5,"_45":46,"_44":162,"_141":63,"_42":207,"_13":67,"_38":164,"_40":-5,"_29":30,"_143":-5,"_191":208,"_32":209},{"_47":200,"_37":201,"_35":202,"_140":161,"_45":46,"_44":162,"_141":30,"_42":203,"_13":67,"_38":26,"_40":204,"_29":30,"_143":-5,"_191":205,"_32":206},{"_47":153,"_37":154,"_35":155,"_140":-5,"_45":46,"_44":149,"_141":63,"_42":197,"_13":67,"_38":26,"_40":157,"_29":30,"_143":-5,"_191":198,"_32":199},{"_47":145,"_37":146,"_35":61,"_140":-5,"_45":46,"_44":147,"_141":30,"_42":194,"_13":149,"_38":150,"_40":151,"_29":30,"_143":-5,"_191":195,"_32":196},{"_47":139,"_37":33,"_35":36,"_140":-5,"_45":46,"_44":14,"_141":63,"_42":190,"_13":67,"_38":39,"_40":41,"_29":30,"_143":-5,"_191":192,"_32":193},["D",1775709624050],"children",[],[33],["D",1775709447082],[],[146],["D",1775709166393],[],[154],"c6a6937e-33cd-11f1-a7ac-42b51c65c3df","index.html","c6a69428-33cd-11f1-a7ac-42b51c65c3df",["D",1775709431907],"\n\n\n \n \n JSON Endpoint Tracker\n \n\n\n

🔍 JSON Endpoint Tracker

\n view source\n

Add Endpoint

\n \n \n \n

\n\n\n\n",[],[160,201],["D",1775709431907],[186],[160],"366e794c-33ce-11f1-8aa1-42b51c65c3df","queries.ts","366e7a14-33ce-11f1-8aa1-42b51c65c3df",6,["D",1775709619457],"script","import { sqlite } from \"https://esm.town/v/std/sqlite/main.ts\";\nimport { email } from \"https://esm.town/v/std/email\";\n\nexport interface Endpoint {\n id: number;\n name: string;\n url: string;\n alert_email: string | null;\n created_at: string;\n}\n\nexport interface Check {\n id: number;\n endpoint_id: number;\n status: number;\n response_time_ms: number;\n is_valid_json: number;\n response_body: string | null;\n changed: number;\n error: string | null;\n checked_at: string;\n}\n\nexport async function getAllEndpoints(): Promise {\n const res = await sqlite.execute(`SELECT * FROM endpoints ORDER BY created_at DESC`);\n return res.rows as unknown as Endpoint[];\n}\n\nexport async function getEndpointById(id: number): Promise {\n const res = await sqlite.execute({ sql: `SELECT * FROM endpoints WHERE id = ?`, args: [id] });\n return (res.rows as unknown as Endpoint[])[0] ?? null;\n}\n\nexport async function getLatestCheck(endpointId: number): Promise {\n const res = await sqlite.execute({\n sql: `SELECT * FROM checks WHERE endpoint_id = ? ORDER BY checked_at DESC LIMIT 1`,\n args: [endpointId],\n });\n return (res.rows as unknown as Check[])[0] ?? null;\n}\n\nexport async function getCheckHistory(endpointId: number, limit = 20): Promise {\n const res = await sqlite.execute({\n sql: `SELECT * FROM checks WHERE endpoint_id = ? ORDER BY checked_at DESC LIMIT ?`,\n args: [endpointId, limit],\n });\n return res.rows as unknown as Check[];\n}\n\nexport async function performCheck(endpoint: Endpoint): Promise {\n const start = Date.now();\n let status = 0;\n let isValidJson = false;\n let responseBody: string | null = null;\n let errorMsg: string | null = null;\n\n try {\n const res = await fetch(endpoint.url, { signal: AbortSignal.timeout(8000) });\n status = res.status;\n const elapsed = Date.now() - start;\n const text = await res.text();\n try {\n JSON.parse(text);\n isValidJson = true;\n responseBody = text;\n } catch {\n responseBody = text.slice(0, 2000); // store first 2kb even if invalid\n }\n\n // Compare with last check to detect changes\n const prev = await getLatestCheck(endpoint.id);\n const changed = prev && prev.response_body !== null && isValidJson\n ? (prev.response_body !== responseBody ? 1 : 0)\n : 0;\n\n const ins = await sqlite.execute({\n sql: `INSERT INTO checks (endpoint_id, status, response_time_ms, is_valid_json, response_body, changed, error)\n VALUES (?, ?, ?, ?, ?, ?, ?)`,\n args: [endpoint.id, status, elapsed, isValidJson ? 1 : 0, responseBody, changed, null],\n });\n\n const check: Check = {\n id: Number(ins.lastInsertRowid),\n endpoint_id: endpoint.id,\n status,\n response_time_ms: elapsed,\n is_valid_json: isValidJson ? 1 : 0,\n response_body: responseBody,\n changed,\n error: null,\n checked_at: new Date().toISOString(),\n };\n\n // Send alert if changed and alert_email configured\n if (changed && endpoint.alert_email) {\n await sendChangeAlert(endpoint, check, prev!);\n }\n\n return check;\n } catch (e: any) {\n errorMsg = e.message;\n const elapsed = Date.now() - start;\n const ins = await sqlite.execute({\n sql: `INSERT INTO checks (endpoint_id, status, response_time_ms, is_valid_json, response_body, changed, error)\n VALUES (?, ?, ?, ?, ?, ?, ?)`,\n args: [endpoint.id, 0, elapsed, 0, null, 0, errorMsg],\n });\n\n const prev = await getLatestCheck(endpoint.id);\n const wasUp = prev && !prev.error;\n if (wasUp && endpoint.alert_email) {\n await sendDownAlert(endpoint, errorMsg);\n }\n\n return {\n id: Number(ins.lastInsertRowid),\n endpoint_id: endpoint.id,\n status: 0,\n response_time_ms: elapsed,\n is_valid_json: 0,\n response_body: null,\n changed: 0,\n error: errorMsg,\n checked_at: new Date().toISOString(),\n };\n }\n}\n\nasync function sendChangeAlert(endpoint: Endpoint, check: Check, prev: Check) {\n const prevParsed = tryParse(prev.response_body);\n const newParsed = tryParse(check.response_body);\n await email.send({\n to: endpoint.alert_email!,\n subject: `[JSON Tracker] Change detected: ${endpoint.name}`,\n text: [\n `A change was detected in the JSON response for: ${endpoint.name}`,\n `URL: ${endpoint.url}`,\n `Checked at: ${check.checked_at}`,\n ``,\n `--- Previous response ---`,\n JSON.stringify(prevParsed, null, 2),\n ``,\n `--- New response ---`,\n JSON.stringify(newParsed, null, 2),\n ].join(\"\\n\"),\n });\n}\n\nasync function sendDownAlert(endpoint: Endpoint, error: string) {\n await email.send({\n to: endpoint.alert_email!,\n subject: `[JSON Tracker] Endpoint down: ${endpoint.name}`,\n text: [\n `Endpoint is unreachable: ${endpoint.name}`,\n `URL: ${endpoint.url}`,\n `Error: ${error}`,\n `Time: ${new Date().toISOString()}`,\n ].join(\"\\n\"),\n });\n}\n\nfunction tryParse(body: string | null | undefined) {\n if (!body) return null;\n try { return JSON.parse(body); } catch { return body; }\n}\n",[],[167,211],"2b5ef374-33ce-11f1-96e9-42b51c65c3df","migrations.ts","2b5ef41e-33ce-11f1-96e9-42b51c65c3df",["D",1775709600896],"import { sqlite } from \"https://esm.town/v/std/sqlite/main.ts\";\n\nexport async function runMigrations() {\n await sqlite.execute(`\n CREATE TABLE IF NOT EXISTS endpoints (\n id INTEGER PRIMARY KEY AUTOINCREMENT,\n name TEXT NOT NULL,\n url TEXT NOT NULL,\n alert_email TEXT,\n created_at TEXT DEFAULT (datetime('now'))\n )\n `);\n\n await sqlite.execute(`\n CREATE TABLE IF NOT EXISTS checks (\n id INTEGER PRIMARY KEY AUTOINCREMENT,\n endpoint_id INTEGER,\n status INTEGER,\n response_time_ms INTEGER,\n is_valid_json INTEGER,\n response_body TEXT,\n changed INTEGER DEFAULT 0,\n error TEXT,\n checked_at TEXT DEFAULT (datetime('now'))\n )\n `);\n\n // Migrate existing endpoints table: add alert_email if missing\n try {\n await sqlite.execute(`ALTER TABLE endpoints ADD COLUMN alert_email TEXT`);\n } catch { /* column already exists */ }\n\n // Migrate existing checks table: add response_body if missing\n try {\n await sqlite.execute(`ALTER TABLE checks ADD COLUMN response_body TEXT`);\n } catch { /* column already exists */ }\n\n // Migrate existing checks table: add changed if missing\n try {\n await sqlite.execute(`ALTER TABLE checks ADD COLUMN changed INTEGER DEFAULT 0`);\n } catch { /* column already exists */ }\n}\n",[],[167,220],["D",1775709600896],[183,184],[167],["D",1775709144649],["D",1789464074488],{"_104":103,"_111":107},{"_104":103,"_105":-5,"_106":107,"_19":59,"_108":109,"_110":30},{"_13":93,"_37":94,"_47":46,"_95":48,"_96":-5,"_97":-5,"_98":-5,"_99":-5,"_100":-5,"_101":49,"_102":103},"ctx",{"_86":-5,"_131":267,"_268":269,"_270":271,"_272":30,"_273":30,"_274":30,"_275":63,"_276":-5,"_277":-7,"_278":-7,"_279":67,"_280":30,"_281":30,"_282":-5,"_283":30,"_284":30,"_285":30,"_286":-5},"ENV",{"_238":239,"_240":241,"_242":94,"_243":244,"_245":246,"_247":248,"_249":250,"_251":252,"_253":254,"_255":256,"_257":258,"_259":260,"_261":262,"_263":264,"_265":266},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","e87eb04e707cf64e7e532c8e8ec395f209e17f15","RENDER_GIT_BRANCH","POSTHOG_API_TOKEN","phc_nmoyuAkStEZuUp69rYlg1DZgrIt19Gx0Y4Hwf8tGgJP","POSTHOG_API_HOST","https://wart.val.town","WEB_API_TEMPLATE","https://{val}.web.val.run","APP_URL","https://www.val.town","MODULE_URL","https://esm.town","VANITY_WEB_API_TEMPLATE","https://{label}.val.run/","DENOLS_URL","https://lsp.val.town","NODE_ENV","production","CLOUDFLARE_TURNSTILE_SITE_KEY","0x4AAAAAACtaIZJH7s9rBMZ6","GOOGLE_CLIENT_ID","875989696899-jtsqkhlbdv5jrlsk8631p7ipjg3c6o62.apps.googleusercontent.com","STRIPE_PUBLISHABLE_KEY","pk_live_51N2zvWEpZTTLipIkVEwXrUG9AT0yeOOEYxszarZT1jpsZV58Ly6wlg3SltZpHN26CUalOBmUSY7adQRQiSkCZz2500qSXNkf8Y","API_URL","https://api.val.town",[],"preferencesKeybindings","default","preferencesTheme","light","preferencesFixers","preferencesCopilot","preferencesSelectionAi","preferencesCloseBrackets","preferencesChatPanelState","preferencesDprint","preferencesDenofmt","notificationCount","flagDenols","isBusinessOrgMember","businessOrgHandle","isBusinessOrgAdmin","isHigherTownieTier","navCollapsed","currentOrgId"]

Diff · v7