From 07a1734d4b269d0b6fdef6b93f7d167316d8bcdb Mon Sep 17 00:00:00 2001
From: Elian Doran <contact@eliandoran.me>
Date: Mon, 29 Dec 2025 19:07:37 +0200
Subject: [PATCH] chore(pdfjs): copy locales during build

---
 packages/pdfjs-viewer/package.json      |  3 +++
 packages/pdfjs-viewer/scripts/build.ts  | 26 ++++++++++++++++++++++++-
 packages/pdfjs-viewer/tsconfig.app.json |  3 +++
 pnpm-lock.yaml                          |  6 ++++--
 scripts/build-utils.ts                  |  9 +++++++++
 5 files changed, 44 insertions(+), 3 deletions(-)

diff --git a/packages/pdfjs-viewer/package.json b/packages/pdfjs-viewer/package.json
index bfddfa275..a50adc9ae 100644
--- a/packages/pdfjs-viewer/package.json
+++ b/packages/pdfjs-viewer/package.json
@@ -6,6 +6,9 @@
     "build": "tsx scripts/build.ts"
   },
   "dependencies": {
+    "@triliumnext/commons": "workspace:*"
+  },
+  "devDependencies": {
     "pdfjs-dist": "5.4.530"
   }
 }
diff --git a/packages/pdfjs-viewer/scripts/build.ts b/packages/pdfjs-viewer/scripts/build.ts
index d4b04f322..b268fcb1b 100644
--- a/packages/pdfjs-viewer/scripts/build.ts
+++ b/packages/pdfjs-viewer/scripts/build.ts
@@ -1,13 +1,37 @@
 import { join } from "path";
 import BuildHelper from "../../../scripts/build-utils";
 import { build as esbuild } from "esbuild";
+import { LOCALES } from "@triliumnext/commons";
 
 const build = new BuildHelper("packages/pdfjs-viewer");
 
+const LOCALE_MAPPINGS: Record<string, string> = {
+    "es": "es-ES"
+};
+
 async function main() {
-    build.copy("viewer", "web");
+    // Copy the viewer files.
+    for (const file of [ "viewer.css", "viewer.html", "viewer.mjs" ]) {
+        build.copy(`viewer/${file}`, `web/${file}`);
+    }
+    build.copy(`viewer/images`, `web/images`);
+
+    // Copy the custom files.
     await buildScript("web/custom.mjs");
     build.copy("src/custom.css", "web/custom.css");
+
+    // Copy locales.
+    const localeMappings = {};
+    for (const locale of LOCALES) {
+        if (locale.id === "en" || locale.contentOnly || locale.devOnly) continue;
+        const mappedLocale = LOCALE_MAPPINGS[locale.electronLocale] || locale.electronLocale.replace("_", "-");
+        const localePath = `${locale.id}/viewer.ftl`;
+        build.copy(`viewer/locale/${mappedLocale}/viewer.ftl`, `web/locale/${localePath}`);
+        localeMappings[locale.id] = localePath;
+    }
+    build.writeJson("web/locale/locale.json", localeMappings);
+
+    // Copy pdfjs-dist files.
     build.copy("/node_modules/pdfjs-dist/build/pdf.mjs", "build/pdf.mjs");
     build.copy("/node_modules/pdfjs-dist/build/pdf.worker.mjs", "build/pdf.worker.mjs");
 }
diff --git a/packages/pdfjs-viewer/tsconfig.app.json b/packages/pdfjs-viewer/tsconfig.app.json
index 973162d8c..f6d82c11b 100644
--- a/packages/pdfjs-viewer/tsconfig.app.json
+++ b/packages/pdfjs-viewer/tsconfig.app.json
@@ -22,5 +22,8 @@
     "eslint.config.mjs"
   ],
   "references": [
+    {
+      "path": "../commons/tsconfig.app.json"
+    }
   ]
 }
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 015db5cd4..1d9ca206b 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -1375,6 +1375,10 @@ importers:
 
   packages/pdfjs-viewer:
     dependencies:
+      '@triliumnext/commons':
+        specifier: workspace:*
+        version: link:../commons
+    devDependencies:
       pdfjs-dist:
         specifier: 5.4.530
         version: 5.4.530
@@ -16044,8 +16048,6 @@ snapshots:
       '@ckeditor/ckeditor5-ui': 47.3.0
       '@ckeditor/ckeditor5-utils': 47.3.0
       ckeditor5: 47.3.0
-    transitivePeerDependencies:
-      - supports-color
 
   '@ckeditor/ckeditor5-restricted-editing@47.3.0':
     dependencies:
diff --git a/scripts/build-utils.ts b/scripts/build-utils.ts
index 6a08f112e..b3cb33afe 100644
--- a/scripts/build-utils.ts
+++ b/scripts/build-utils.ts
@@ -87,6 +87,15 @@ export default class BuildHelper {
         }
     }
 
+    writeJson(relativePath: string, data: any) {
+        const fullPath = join(this.outDir, relativePath);
+        const dirPath = fullPath.substring(0, fullPath.lastIndexOf("/"));
+        if (dirPath) {
+            mkdirpSync(dirPath);
+        }
+        writeFileSync(fullPath, JSON.stringify(data, null, 4), "utf-8");
+    }
+
 }
 
 function tryPath(paths: string[]) {