DB: add temporary script to calculate length of existing subsections … (

#81)

db/calculate-subsection-subsubsection-lengthkm.js

@@ -0,0 +1,41 @@
+require("dotenv").config({ path: "./.env.local" })
+const { length, lineString } = require("@turf/turf")
+const { PrismaClient } = require("@prisma/client")
+
+const db = new PrismaClient()
+/*
+ * This function is executed when you run `todo`.
+ */
+const calculateLengthKm = async () => {
+  const subsections = await db.subsection.findMany()
+  console.log("subsections successfully fetched")
+  subsections.forEach(async (subsection) => {
+    const calculatedLengthKm = Number(length(lineString(subsection.geometry)).toFixed(3))
+    const updatedSubsection = await db.subsection.update({
+      where: { id: subsection.id },
+      data: { lengthKm: calculatedLengthKm },
+    })
+    console.log(
+      `updated subsection ${updatedSubsection.id} successfuly`,
+      updatedSubsection.lengthKm,
+    )
+  })
+  const subsubsections = await db.subsubsection.findMany()
+  console.log("subsubsections successfully fetched")
+  subsubsections.forEach(async (subsubsection) => {
+    const calculatedLengthKm =
+      subsubsection.type === "AREA"
+        ? 0.1 // AREAs are SF, they have no length so they get a default
+        : Number(length(lineString(subsubsection.geometry)).toFixed(3))
+    const updatedSubsubsection = await db.subsubsection.update({
+      where: { id: subsubsection.id },
+      data: { lengthKm: calculatedLengthKm },
+    })
+    console.log(
+      `updated subsubsection ${updatedSubsubsection.id} successfuly`,
+      updatedSubsubsection.lengthKm,
+    )
+  })
+}
+
+calculateLengthKm()

package.json

@@ -31,7 +31,8 @@
     "seed": "npm run predev && npm run migrate && blitz prisma migrate reset && blitz db seed",
     "updatePackages": "npx taze major --write",
     "release": "gh pr create --base main --head develop --title \"Release $(date '+%Y-%m-%d')\" --body \"\"",
-    "prepare": "husky install"
+    "prepare": "husky install",
+    "calc-lengthkm": "node db/calculate-subsection-subsubsection-lengthkm.js"
   },
   "prisma": {
     "schema": "db/schema.prisma"