feat: plugin wrapper type safety

packages/plugin-core/package.json

@@ -5,7 +5,7 @@
   "main": "src/index.ts",
   "scripts": {
     "build": "pnpm build:tsc && pnpm build:wasm",
-    "build:tsc": "tsc --noEmit && node esbuild.js",
+    "build:tsc": "mkdir -p dist && echo \"type Manifest = $(cat manifest.json); \nexport default Manifest;\" > dist/manifest.d.ts && tsc --noEmit && node esbuild.js",
     "build:wasm": "extism-js dist/index.js -i src/index.d.ts -o dist/plugin.wasm"
   },
   "keywords": [],

packages/plugin-core/src/index.ts

@@ -1,5 +1,11 @@
-import { wrapper } from '@immich/plugin-sdk';
-import { AssetTypeEnum, AssetVisibility, WorkflowType } from '@immich/sdk';
+import { getWrapper } from '@immich/plugin-sdk';
+import { AssetVisibility } from '@immich/sdk';
+import type manifestType from '../dist/manifest';
+
+const wrapper = getWrapper<manifestType>();
+type Foo = (manifestType['methods'][number] & {
+  name: 'assetMissingTimeZoneFilter';
+})['schema']['properties']['inverse']['type'];
 
 type AssetFileFilterConfig = {
   pattern: string;
@@ -7,7 +13,7 @@ type AssetFileFilterConfig = {
   caseSensitive?: boolean;
 };
 export const assetFileFilter = () => {
-  return wrapper<WorkflowType.AssetV1, AssetFileFilterConfig>(({ data, config }) => {
+  return wrapper<'assetFileFilter'>(({ data, config }) => {
     const { pattern, matchType = 'contains', caseSensitive = false } = config;
 
     const { asset } = data;
@@ -43,7 +49,7 @@ export const assetFileFilter = () => {
 };
 
 export const assetMissingTimeZoneFilter = () => {
-  return wrapper<WorkflowType.AssetV1, { inverse?: boolean }>(({ config, data }) => {
+  return wrapper<'assetMissingTimeZoneFilter'>(({ config, data }) => {
     const hasTimeZone = !!data.asset?.exifInfo?.timeZone;
     const needsTimeZone = config.inverse ? true : false;
     return { workflow: { continue: hasTimeZone === needsTimeZone } };
@@ -51,13 +57,7 @@ export const assetMissingTimeZoneFilter = () => {
 };
 
 export const assetLocationFilter = () => {
-  return wrapper<
-    WorkflowType.AssetV1,
-    {
-      region?: { country?: string; state?: string; city?: string };
-      coordinate?: { latitude?: string; longitude?: string; radius?: number };
-    }
-  >(({ config, data }) => {
+  return wrapper<'assetLocationFilter'>(({ config, data }) => {
     if (
       (config.region?.country && config.region.country !== data.asset.exifInfo?.country) ||
       (config.region?.state && config.region.state !== data.asset.exifInfo?.state) ||
@@ -96,13 +96,13 @@ export const assetLocationFilter = () => {
 };
 
 export const assetTypeFilter = () => {
-  return wrapper<WorkflowType.AssetV1, { allowedTypes: AssetTypeEnum[] }>(({ config, data }) => {
+  return wrapper<'assetTypeFilter'>(({ config, data }) => {
     return { workflow: { continue: config.allowedTypes.includes(data.asset.type) } };
   });
 };
 
 export const assetFavorite = () => {
-  return wrapper<WorkflowType.AssetV1, { inverse?: boolean }>(({ config, data }) => {
+  return wrapper<'assetFavorite'>(({ config, data }) => {
     const target = config.inverse ? false : true;
     if (target !== data.asset.isFavorite) {
       return {
@@ -115,13 +115,13 @@ export const assetFavorite = () => {
 };
 
 export const assetVisibility = () => {
-  return wrapper<WorkflowType.AssetV1, { visibility: AssetVisibility }>(({ config }) => ({
+  return wrapper<'assetVisibility'>(({ config }) => ({
     changes: { asset: { visibility: config.visibility } },
   }));
 };
 
 export const assetArchive = () => {
-  return wrapper<WorkflowType.AssetV1, { inverse?: boolean }>(({ config, data }) => {
+  return wrapper<'assetArchive'>(({ config, data }) => {
     if (!config.inverse && data.asset.visibility !== AssetVisibility.Archive) {
       return { changes: { asset: { visibility: AssetVisibility.Archive } } };
     }
@@ -135,7 +135,7 @@ export const assetArchive = () => {
 };
 
 export const assetLock = () => {
-  return wrapper<WorkflowType.AssetV1, { inverse?: boolean }>(({ config, data }) => {
+  return wrapper<'assetLock'>(({ config, data }) => {
     if (!config.inverse && data.asset.visibility !== AssetVisibility.Locked) {
       return { changes: { asset: { visibility: AssetVisibility.Locked } } };
     }
@@ -148,13 +148,13 @@ export const assetLock = () => {
   });
 };
 
-export const assetTrash = () => {
-  // TODO use trash/untrash host functions
-  return wrapper<WorkflowType.AssetV1, { inverse?: boolean }>(() => ({}));
-};
+// export const assetTrash = () => {
+//   // TODO use trash/untrash host functions
+//   return wrapper<WorkflowType.AssetV1, { inverse?: boolean }>(() => ({}));
+// };
 
 export const assetAddToAlbums = () => {
-  return wrapper<WorkflowType.AssetV1, { albumIds: string[]; albumName?: string }>(({ config, data, functions }) => {
+  return wrapper<'assetAddToAlbums'>(({ config, data, functions }) => {
     const assetId = data.asset.id;
 
     if (config.albumIds.length === 0) {

packages/plugin-sdk/src/sdk.ts

@@ -1,53 +1,95 @@
 import type { WorkflowType } from '@immich/sdk';
 import { hostFunctions } from 'src/host-functions.js';
 import type {
-  ConfigValue,
   WorkflowEventPayload,
   WorkflowResponse,
   WorkflowStepConfig,
 } from 'src/types.js';
 
-export const wrapper = <
-  T extends WorkflowType,
-  TConfig extends ConfigValue = ConfigValue,
->(
-  fn: (
-    payload: WorkflowEventPayload<T, TConfig> & {
-      functions: ReturnType<typeof hostFunctions>;
-    },
-  ) => WorkflowResponse<T> | undefined,
-) => {
-  const input = Host.inputString();
-
-  try {
-    const payload = JSON.parse(input) as WorkflowEventPayload<T, TConfig>;
-    const event = {
-      ...payload,
-      functions: hostFunctions(payload.workflow.authToken),
-    };
-
-    const eventConfigBefore = JSON.stringify(event.config);
-
-    console.debug(
-      `Inputs: trigger=${event.trigger}, event=${event.type}, config=${eventConfigBefore}`,
-    );
-
-    const response = fn(event) ?? {};
-
-    // if config changed, notify host
-    const eventConfigAfter = JSON.stringify(event.config);
-    if (!response.config && eventConfigBefore !== eventConfigAfter) {
-      response.config = event.config as WorkflowStepConfig;
-    }
-
-    console.debug(
-      `Outputs: workflow=${JSON.stringify(response.workflow)}, changes=${JSON.stringify(response.changes)}, data=${JSON.stringify(response.data)}, config=${JSON.stringify(response.config)}`,
-    );
-
-    const output = JSON.stringify(response);
-    Host.outputString(output);
-  } catch (error: Error | any) {
-    console.error(`Unhandled plugin exception: ${error.message || error}`);
-    throw error;
-  }
+type Property = {
+  type: 'string' | 'boolean' | 'number' | 'object';
+  array?: boolean;
+  enum?: string[];
 };
+type RequiredProperties<
+  Properties extends { [K: string]: unknown },
+  Required extends string[] | undefined,
+  RequiredKeys extends string = Required extends undefined
+    ? never
+    : NonNullable<Required>[number],
+> = {
+  properties: Pick<Properties, RequiredKeys> &
+    Partial<Omit<Properties, RequiredKeys>>;
+};
+
+type GetConfigType<T extends Property> = 'enum' extends keyof T
+  ? NonNullable<T['enum']>[number]
+  : T['type'] extends 'boolean'
+    ? boolean
+    : T['type'] extends 'number'
+      ? number
+      : T['type'] extends 'string'
+        ? string
+        : object;
+
+type ConfigValue<
+  T extends { properties: { [K: string]: Property }; required?: string[] },
+  Properties extends { [K: string]: Property } = T['properties'],
+> = T extends never
+  ? never
+  : RequiredProperties<
+      {
+        [K in keyof Properties]: Properties[K]['array'] extends true
+          ? Array<GetConfigType<Properties[K]>>
+          : GetConfigType<Properties[K]>;
+      },
+      'required' extends keyof T ? T['required'] : undefined
+    >['properties'];
+
+export const getWrapper =
+  <T extends Record<string, any>>() =>
+  <
+    K extends T['methods'][number]['name'],
+    L extends WorkflowType = (T['methods'][number] & { name: K })['types'][0],
+    TConfig = ConfigValue<(T['methods'][number] & { name: K })['schema']>,
+  >(
+    fn: (
+      payload: WorkflowEventPayload<L, TConfig> & {
+        functions: ReturnType<typeof hostFunctions>;
+      },
+    ) => WorkflowResponse<L> | undefined,
+  ) => {
+    const input = Host.inputString();
+
+    try {
+      const payload = JSON.parse(input) as WorkflowEventPayload<K, TConfig>;
+      const event = {
+        ...payload,
+        functions: hostFunctions(payload.workflow.authToken),
+      };
+
+      const eventConfigBefore = JSON.stringify(event.config);
+
+      console.debug(
+        `Inputs: trigger=${event.trigger}, event=${event.type}, config=${eventConfigBefore}`,
+      );
+
+      const response = fn(event) ?? {};
+
+      // if config changed, notify host
+      const eventConfigAfter = JSON.stringify(event.config);
+      if (!response.config && eventConfigBefore !== eventConfigAfter) {
+        response.config = event.config as WorkflowStepConfig;
+      }
+
+      console.debug(
+        `Outputs: workflow=${JSON.stringify(response.workflow)}, changes=${JSON.stringify(response.changes)}, data=${JSON.stringify(response.data)}, config=${JSON.stringify(response.config)}`,
+      );
+
+      const output = JSON.stringify(response);
+      Host.outputString(output);
+    } catch (error: Error | any) {
+      console.error(`Unhandled plugin exception: ${error.message || error}`);
+      throw error;
+    }
+  };