Finish a Play release from the bundle already uploaded for this version code instead of failing on it

scripts/release/lib/play.mjs

@@ -33,7 +33,7 @@ const getAccessToken = async ({client_email, private_key}) => {
   return body.access_token
 }
 
-export const uploadToPlay = async ({credentials, packageName, bundle, track, status, notes}) => {
+export const play = async ({credentials, packageName}) => {
   const accessToken = await getAccessToken(credentials)
   const base = `https://androidpublisher.googleapis.com/androidpublisher/v3/applications/${packageName}`
 
@@ -48,6 +48,10 @@ export const uploadToPlay = async ({credentials, packageName, bundle, track, sta
       body: binary ? body : body && JSON.stringify(body),
     })
 
+    if (response.status === 204) {
+      return undefined
+    }
+
     const result = await response.json()
 
     if (!response.ok) {
@@ -57,25 +61,41 @@ export const uploadToPlay = async ({credentials, packageName, bundle, track, sta
     return result
   }
 
-  const edit = await api("POST", `${base}/edits`)
-  const {versionCode} = await api(
-    "POST",
-    `https://androidpublisher.googleapis.com/upload/androidpublisher/v3/applications/${packageName}/edits/${edit.id}/bundles?uploadType=media`,
-    bundle,
-  )
+  return {
+    // Listing bundles needs an edit, which is thrown away so the build can run before the real one
+    bundles: async () => {
+      const edit = await api("POST", `${base}/edits`)
 
-  await api("PUT", `${base}/edits/${edit.id}/tracks/${track}`, {
-    track,
-    releases: [
-      {
-        status,
-        versionCodes: [String(versionCode)],
-        releaseNotes: [{language: "en-US", text: notes}],
-      },
-    ],
-  })
+      try {
+        return (await api("GET", `${base}/edits/${edit.id}/bundles`)).bundles ?? []
+      } finally {
+        await api("DELETE", `${base}/edits/${edit.id}`)
+      }
+    },
 
-  await api("POST", `${base}/edits/${edit.id}:commit`)
+    release: async ({bundle, versionCode, track, status, notes}) => {
+      const edit = await api("POST", `${base}/edits`)
 
-  return versionCode
+      if (bundle) {
+        await api(
+          "POST",
+          `https://androidpublisher.googleapis.com/upload/androidpublisher/v3/applications/${packageName}/edits/${edit.id}/bundles?uploadType=media`,
+          bundle,
+        )
+      }
+
+      await api("PUT", `${base}/edits/${edit.id}/tracks/${track}`, {
+        track,
+        releases: [
+          {
+            status,
+            versionCodes: [String(versionCode)],
+            releaseNotes: [{language: "en-US", text: notes}],
+          },
+        ],
+      })
+
+      await api("POST", `${base}/edits/${edit.id}:commit`)
+    },
+  }
 }

scripts/release/steps/play.mjs

@@ -1,8 +1,13 @@
+import {createHash} from "node:crypto"
+import {existsSync} from "node:fs"
 import {readFile} from "node:fs/promises"
 import {join, resolve} from "node:path"
+import {spec} from "@welshman/lib"
 import {gradle, keystoreEnv} from "../lib/android.mjs"
 import {followUps, missingEnv, notes, root, version} from "../lib/context.mjs"
-import {uploadToPlay} from "../lib/play.mjs"
+import {play} from "../lib/play.mjs"
+
+const aab = join(root, "android/app/build/outputs/bundle/release/app-release.aab")
 
 export default {
   name: "play",
@@ -24,19 +29,43 @@ export default {
     "PLAY_TRACK (default production) and PLAY_STATUS (default draft) are optional.",
   ],
   run: async () => {
-    await gradle("bundleRelease", keystoreEnv("PLAY"))
-
     const gradleConfig = await readFile(join(root, "android/app/build.gradle"), "utf-8")
+    const versionCode = Number(gradleConfig.match(/versionCode (\d+)/)[1])
     const track = process.env.PLAY_TRACK ?? "production"
     const status = process.env.PLAY_STATUS ?? "draft"
-    const versionCode = await uploadToPlay({
+    const api = await play({
       credentials: JSON.parse(
         await readFile(resolve(root, process.env.PLAY_SERVICE_ACCOUNT), "utf-8"),
       ),
       packageName: gradleConfig.match(/applicationId "(.+)"/)[1],
-      bundle: await readFile(
-        join(root, "android/app/build/outputs/bundle/release/app-release.aab"),
-      ),
+    })
+
+    // Play never takes a version code twice, so a rerun after an upload goes on to finish the
+    // release with that bundle. Rebuilding would change its bytes, so it only counts as this
+    // build while the aab on disk is the one that went up.
+    const uploaded = (await api.bundles()).find(spec({versionCode}))
+
+    if (uploaded) {
+      const local =
+        existsSync(aab) &&
+        createHash("sha256")
+          .update(await readFile(aab))
+          .digest("hex")
+
+      if (local !== uploaded.sha256) {
+        throw new Error(
+          `Play already has version code ${versionCode} from a build that isn't ${aab}; bump versionCode in android/app/build.gradle`,
+        )
+      }
+
+      console.log(`Play already has version code ${versionCode} from this build, releasing it`)
+    } else {
+      await gradle("bundleRelease", keystoreEnv("PLAY"))
+    }
+
+    await api.release({
+      bundle: uploaded ? undefined : await readFile(aab),
+      versionCode,
       track,
       status,
       // Play rejects release notes over 500 characters