Add customizer support for OpenSCAD

This also includes sending metadata and part of the concatenated gzip,
not in the s3 metadata as that has a 2kb limit.

Resolves #320

app/web/src/helpers/cadPackages/openScad/openScadController.ts

@@ -0,0 +1,140 @@
+import {
+  lambdaBaseURL,
+  stlToGeometry,
+  createHealthyResponse,
+  createUnhealthyResponse,
+  timeoutErrorMessage,
+  RenderArgs,
+  splitGziped,
+} from '../common'
+import { openScadToCadhubParams } from './openScadParams'
+
+export const render = async ({ code, settings }: RenderArgs) => {
+  const pixelRatio = window.devicePixelRatio || 1
+  const size = {
+    x: Math.round(settings.viewerSize?.width * pixelRatio),
+    y: Math.round(settings.viewerSize?.height * pixelRatio),
+  }
+  const round1dec = (number) => Math.round((number + Number.EPSILON) * 10) / 10
+  const body = JSON.stringify({
+    settings: {
+      size,
+      parameters: settings.parameters,
+      camera: {
+        // rounding to give our caching a chance to sometimes work
+        ...settings.camera,
+        dist: round1dec(settings.camera.dist),
+        position: {
+          x: round1dec(settings.camera.position.x),
+          y: round1dec(settings.camera.position.y),
+          z: round1dec(settings.camera.position.z),
+        },
+        rotation: {
+          x: round1dec(settings.camera.rotation.x),
+          y: round1dec(settings.camera.rotation.y),
+          z: round1dec(settings.camera.rotation.z),
+        },
+      },
+    },
+    file: code,
+  })
+  if (!settings.camera.position) {
+    return
+  }
+  try {
+    const response = await fetch(lambdaBaseURL + '/openscad/preview', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body,
+    })
+    if (response.status === 400) {
+      const { error } = await response.json()
+      const cleanedErrorMessage = cleanError(error)
+      return createUnhealthyResponse(new Date(), cleanedErrorMessage)
+    }
+    if (response.status === 502) {
+      return createUnhealthyResponse(new Date(), timeoutErrorMessage)
+    }
+    const data = await response.json()
+    const type = data.type !== 'stl' ? 'png' : 'geometry'
+    const newData = await fetch(data.url).then(async (a) => {
+      const blob = await a.blob()
+      const text = await new Response(blob).text()
+      const { consoleMessage, customizerParams } = splitGziped(text)
+      return {
+        data:
+          data.type !== 'stl'
+            ? blob
+            : await stlToGeometry(window.URL.createObjectURL(blob)),
+        consoleMessage,
+        customizerParams,
+      }
+    })
+    return createHealthyResponse({
+      type,
+      data: newData.data,
+      consoleMessage: newData.consoleMessage,
+      date: new Date(),
+      customizerParams: openScadToCadhubParams(newData.customizerParams || []),
+    })
+  } catch (e) {
+    return createUnhealthyResponse(new Date())
+  }
+}
+
+export const stl = async ({ code, settings }: RenderArgs) => {
+  const body = JSON.stringify({
+    settings: {},
+    file: code,
+  })
+  try {
+    const response = await fetch(lambdaBaseURL + '/openscad/stl', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body,
+    })
+    if (response.status === 400) {
+      const { error } = await response.json()
+      const cleanedErrorMessage = cleanError(error)
+      return createUnhealthyResponse(new Date(), cleanedErrorMessage)
+    }
+    if (response.status === 502) {
+      return createUnhealthyResponse(new Date(), timeoutErrorMessage)
+    }
+    const data = await response.json()
+    const newData = await fetch(data.url).then(async (a) => {
+      const blob = await a.blob()
+      const text = await new Response(blob).text()
+      const { consoleMessage, customizerParams } = splitGziped(text)
+      return {
+        data: await stlToGeometry(window.URL.createObjectURL(blob)),
+        consoleMessage,
+        customizerParams,
+      }
+    })
+    return createHealthyResponse({
+      type: 'geometry',
+      data: newData.data,
+      consoleMessage: newData.consoleMessage,
+      date: new Date(),
+      customizerParams: openScadToCadhubParams(newData.customizerParams || []),
+    })
+  } catch (e) {
+    return createUnhealthyResponse(new Date())
+  }
+}
+
+const openscad = {
+  render,
+  stl,
+}
+
+export default openscad
+
+function cleanError(error) {
+  return error.replace(/["|']\/tmp\/.+\/main.scad["|']/g, "'main.scad'")
+}