Initial commit: Busbar Designer

Web tool for designing nickel/copper busbars over cylindrical-cell battery packs (21700, 18650) in hex holders. Flask + build123d backend exports STEP/DXF/SVG; vanilla JS frontend with live preview, multi-project SQLite persistence, snapshot history. Deploy scripts in deploy/ (proxmox-lxc.sh, install.sh, update.sh).
2026-05-24 18:59:50 +03:00
commit d8cb0dc06d
28 changed files with 4172 additions and 0 deletions
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+/* api.js — thin REST client over fetch(). Throws on non-2xx so callers can
+ * try/catch. Returns parsed JSON.
+ */
+
+const Api = (() => {
+
+  async function _req(method, url, body) {
+    const opts = { method, headers: {} };
+    if (body !== undefined) {
+      opts.headers["content-type"] = "application/json";
+      opts.body = JSON.stringify(body);
+    }
+    const res = await fetch(url, opts);
+    if (!res.ok) {
+      let msg = res.statusText;
+      try { msg = (await res.json()).error || msg; } catch {}
+      const err = new Error(`${res.status} ${msg}`);
+      err.status = res.status;
+      throw err;
+    }
+    if (res.status === 204) return null;
+    const ct = res.headers.get("content-type") || "";
+    return ct.includes("application/json") ? res.json() : res.text();
+  }
+
+  return {
+    // Projects
+    listProjects:   ()              => _req("GET",    "/api/projects"),
+    getProject:     (id)            => _req("GET",    `/api/projects/${id}`),
+    createProject:  (name, data)    => _req("POST",   "/api/projects", { name, data }),
+    updateProject:  (id, payload)   => _req("PUT",    `/api/projects/${id}`, payload),
+    deleteProject:  (id)            => _req("DELETE", `/api/projects/${id}`),
+
+    // Snapshots
+    listSnapshots:    (projectId) => _req("GET",  `/api/projects/${projectId}/snapshots`),
+    getSnapshot:      (sid)       => _req("GET",  `/api/snapshots/${sid}`),
+    restoreSnapshot:  (sid)       => _req("POST", `/api/snapshots/${sid}/restore`),
+
+    // Presets
+    listPresets:   ()                => _req("GET",    "/api/presets"),
+    createPreset:  (name, params)    => _req("POST",   "/api/presets", { name, params }),
+    updatePreset:  (id, payload)     => _req("PUT",    `/api/presets/${id}`, payload),
+    deletePreset:  (id)              => _req("DELETE", `/api/presets/${id}`),
+  };
+})();