From 23902023c4a5549ce37a8e8543ac4b9a20b6edca Mon Sep 17 00:00:00 2001
From: nzbr <mail@nzbr.de>
Date: Thu, 4 Jan 2024 19:58:22 +0100
Subject: [PATCH] web: add speechbubble post-processor

---
 package.json                             |  5 +-
 web/html-postprocessors/.gitignore       |  1 +
 web/html-postprocessors/speechbubbles.ts | 79 ++++++++++++++++++++++++
 web/html-postprocessors/tsconfig.json    | 13 ++++
 4 files changed, 97 insertions(+), 1 deletion(-)
 create mode 100644 web/html-postprocessors/.gitignore
 create mode 100644 web/html-postprocessors/speechbubbles.ts
 create mode 100644 web/html-postprocessors/tsconfig.json

diff --git a/package.json b/package.json
index 3c13345..6cf3347 100644
--- a/package.json
+++ b/package.json
@@ -11,12 +11,15 @@
   },
   "dependencies": {
     "@fontsource/jetbrains-mono": "^5.0.2",
-    "@fontsource/roboto-slab": "^5.0.2"
+    "@fontsource/roboto-slab": "^5.0.2",
+    "@nzbr/parcel-transformer-postprocess-html": "github:nzbr/parcel-transformer-postprocess-html"
   },
   "peerDependencies": {
     "sharp": "^0.31.1"
   },
   "devDependencies": {
+    "@types/node": "^20.10.6",
+    "typescript": "^5.3.3",
     "base16-builder": "^1.3.0"
   }
 }
diff --git a/web/html-postprocessors/.gitignore b/web/html-postprocessors/.gitignore
new file mode 100644
index 0000000..a6c7c28
--- /dev/null
+++ b/web/html-postprocessors/.gitignore
@@ -0,0 +1 @@
+*.js
diff --git a/web/html-postprocessors/speechbubbles.ts b/web/html-postprocessors/speechbubbles.ts
new file mode 100644
index 0000000..5b806c9
--- /dev/null
+++ b/web/html-postprocessors/speechbubbles.ts
@@ -0,0 +1,79 @@
+import * as path from 'path';
+import * as fs from 'fs';
+import type { StepInputs } from '@nzbr/parcel-transformer-postprocess-html/src';
+import { toPosixPath } from '@nzbr/parcel-transformer-postprocess-html/src';
+
+export function generateSpeechbubbles({ $, asset, options }: StepInputs): void {
+  const root = toPosixPath(options.projectRoot);
+  const stickers = path.posix.join(root, 'src', 'stickers');
+
+  asset.invalidateOnFileCreate({
+    glob: path.posix.join(stickers, '*'),
+  });
+
+  fs.readdirSync(stickers).forEach((character) => {
+    const characterDir = path.posix.join(stickers, character);
+    const cssClass = character.toLowerCase().trim().replaceAll(' ', '-');
+    $(`.${cssClass}`).each((_, el) => {
+      asset.invalidateOnFileCreate({
+        glob: path.posix.join(characterDir, '*'),
+      });
+
+      const stickers = fs
+        .readdirSync(characterDir)
+        .filter((file) => !file.endsWith('.txt'))
+        .map((file) => {
+          const stickerName = file.split('.').slice(0, -1).join('.');
+
+          return {
+            stickerName,
+            stickerFile: path.posix.join(characterDir, file),
+            stickerAltFile: path.posix.join(characterDir, stickerName + '.txt'),
+            stickerCssClass: stickerName.toLowerCase().trim().replaceAll(' ', '-'),
+          };
+        });
+
+      const defaultSticker = stickers.find(
+        (sticker) => sticker.stickerName === character,
+      );
+      const variants = stickers.filter((sticker) => sticker.stickerName !== character);
+
+      const sticker = variants
+        .concat(defaultSticker ? [defaultSticker] : [])
+        .find((sticker) => $(el).hasClass(sticker.stickerCssClass));
+
+      if (!sticker) {
+        asset.invalidateOnFileCreate({
+          glob: path.posix.join(characterDir, `${character}.*`),
+        });
+        throw new Error(`No sticker found for ${character} in ${asset.filePath}`);
+      }
+
+      if (!fs.existsSync(sticker.stickerAltFile)) {
+        asset.invalidateOnFileCreate({
+          glob: path.posix.join(characterDir, `${sticker.stickerName}.txt`),
+        });
+        throw new Error(
+          `No alt text found for ${sticker.stickerName} in ${asset.filePath}`,
+        );
+      }
+
+      asset.invalidateOnFileChange(sticker.stickerAltFile);
+      const alt = fs.readFileSync(sticker.stickerAltFile, 'utf-8').trim();
+
+      const url = asset.addURLDependency(
+        `/${path.posix.relative(root, sticker.stickerFile)}`,
+        {},
+      );
+
+      $(el).addClass('speechbubble');
+      $(el).html(`
+        <img src="${url}" title=${character} alt="${alt}" width='128' />
+        <div class="text">
+          ${$(el).html() ?? ''}
+        </div>
+      `);
+      // width=128 is a fallback for the reader mode, because it ignores the CSS
+    });
+  });
+}
diff --git a/web/html-postprocessors/tsconfig.json b/web/html-postprocessors/tsconfig.json
new file mode 100644
index 0000000..4ab48f4
--- /dev/null
+++ b/web/html-postprocessors/tsconfig.json
@@ -0,0 +1,13 @@
+{
+  "include": [
+    "*.ts"
+  ],
+  "exclude": [],
+  "compilerOptions": {
+    "module": "CommonJS",
+    "outDir": ".",
+    "lib": [
+      "ES2021"
+    ]
+  }
+}