modelscript/apps/api/src/routes/scripts.ts at main · modelscript/modelscript · GitHub

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import express from "express";

import fs from "node:fs";

import os from "node:os";

import path from "node:path";

import { LibraryDatabase } from "../database.js";

import { requireAuth } from "../middleware/auth-middleware.js";

export function scriptsRouter(db: LibraryDatabase) {

const router = express.Router();

// ── Script Templates ─────────────────────────────────────────────

router.get("/templates", (req, res) => {

try {

const templates = db.getScriptTemplates();

res.json({ templates });

} catch (error) {

console.error("Error fetching templates:", error);

res.status(500).json({ error: "Failed to fetch templates" });

}

});

router.get("/templates/:id", (req, res) => {

try {

const id = parseInt(req.params.id as string);

const template = db.getScriptTemplate(id);

if (!template) return res.status(404).json({ error: "Template not found" });

res.json({ template });

} catch (error) {

console.error("Error fetching template:", error);

res.status(500).json({ error: "Failed to fetch template" });

}

});

router.post("/templates/:id/run", requireAuth, (req, res) => {

try {

const id = parseInt(req.params.id as string);

const template = db.getScriptTemplate(id);

if (!template) return res.status(404).json({ error: "Template not found" });

const resultDir = fs.mkdtempSync(path.join(os.tmpdir(), "job-"));

const logPath = path.join(resultDir, "output.log");

fs.writeFileSync(logPath, `Starting job for template ${template.name}...\\n`);

const jobId = db.createJob(

template.name,

"RUNNING",

"TEMPLATE_RUN",

"api",

null,

JSON.stringify({ templateSlug: template.slug, templateId: id, resultDir }),

);

const step1 = db.createJobStep(jobId, "Initializing Environment", "RUNNING");

// Simulate a background job

setTimeout(() => {

db.updateJobStepStatus(step1, "SUCCESS");

fs.appendFileSync(logPath, "Environment initialized successfully.\\n");

const step2 = db.createJobStep(jobId, "Executing Script", "RUNNING");

fs.appendFileSync(logPath, "Executing main script...\\n");

setTimeout(() => {

db.updateJobStepStatus(step2, "SUCCESS");

fs.appendFileSync(logPath, "Script execution completed.\\n");

db.updateJobStatus(jobId, "SUCCESS");

fs.appendFileSync(logPath, "Job finished successfully.\\n");

}, 2000);

res.json({ jobId });

} catch (error) {

console.error("Error running template:", error);

res.status(500).json({ error: "Failed to run template" });

}

});

// ── Job Instances ────────────────────────────────────────────────

router.get("/", (req, res) => {

try {

const limit = parseInt(req.query.limit as string) || 50;

const offset = parseInt(req.query.offset as string) || 0;

const jobs = db.getJobs(limit, offset);

res.json({ jobs });

} catch (error) {

console.error("Error fetching jobs:", error);

res.status(500).json({ error: "Failed to fetch jobs" });

}

});

router.get("/:id", (req, res) => {

try {

const jobId = parseInt(req.params.id as string);

const job = db.getJob(jobId);

if (!job) {

return res.status(404).json({ error: "Job not found" });

}

const steps = db.getJobSteps(jobId);

res.json({ job, steps });

} catch (error) {

console.error("Error fetching job details:", error);

res.status(500).json({ error: "Failed to fetch job details" });

}

});

router.get("/:id/logs", requireAuth, (req, res) => {

try {

const jobId = parseInt(req.params.id as string);

const job = db.getJob(jobId);

if (!job || !job.metadata) return res.status(404).json({ error: "Logs not found" });

const metadata = JSON.parse(job.metadata);

if (!metadata.resultDir) return res.status(404).json({ error: "Log path not found" });

const logPath = path.join(metadata.resultDir, "output.log");

if (!fs.existsSync(logPath)) return res.status(404).json({ error: "Log file not created yet" });

res.sendFile(logPath);

} catch (error) {

console.error("Error fetching logs:", error);

res.status(500).json({ error: "Failed to fetch logs" });

}

});

router.get("/:id/stream", requireAuth, (req, res) => {

try {

const jobId = parseInt(req.params.id as string);

const job = db.getJob(jobId);

if (!job || !job.metadata) return res.status(404).end();

const metadata = JSON.parse(job.metadata);

if (!metadata.resultDir) return res.status(404).end();

const logPath = path.join(metadata.resultDir, "output.log");

res.setHeader("Content-Type", "text/event-stream");

res.setHeader("Cache-Control", "no-cache");

res.setHeader("Connection", "keep-alive");

const sendStatusUpdate = () => {

const updatedJob = db.getJob(jobId);

const steps = db.getJobSteps(jobId);

res.write(`event: status\ndata: ${JSON.stringify({ job: updatedJob, steps })}\n\n`);

};

sendStatusUpdate();

let bytesRead = 0;

const sendNewLogs = () => {

if (!fs.existsSync(logPath)) return;

const stats = fs.statSync(logPath);

if (stats.size > bytesRead) {

const stream = fs.createReadStream(logPath, { start: bytesRead, end: stats.size - 1 });

stream.on("data", (chunk) => {

res.write(`event: log\ndata: ${JSON.stringify(chunk.toString())}\n\n`);

});

bytesRead = stats.size;

}

};

sendNewLogs();

const intervalId = setInterval(() => {

sendNewLogs();

sendStatusUpdate();

const currentJob = db.getJob(jobId);

if (

currentJob &&

(currentJob.status === "SUCCESS" || currentJob.status === "FAILED" || currentJob.status === "CANCELLED")

) {

clearInterval(intervalId);

res.write(`event: complete\ndata: ${currentJob.status}\n\n`);

res.end();

}

}, 1000);

req.on("close", () => {

clearInterval(intervalId);

});

} catch (error) {

console.error("Error in stream:", error);

res.status(500).end();

}

});

return router;

}

modelscript/apps/api/src/routes/scripts.ts at main · modelscript/modelscript · GitHub

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modelscript/apps/api/src/routes/scripts.ts at main · modelscript/modelscript · GitHub

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