feat: initial skill implementation

2026-03-14 11:31:25 +08:00 · 2026-03-14 11:31:25 +08:00 · 1ce61a50b8
parent 2c2c24a310
commit 1ce61a50b8
5 changed files with 428 additions and 44 deletions
--- a/SKILL.md
+++ b/SKILL.md
@ -1,26 +1,34 @@
 ---
-name: my-skill
-description: "TODO: describe what this skill does and when to use it."
+name: gemini-image-translator
+description: Translate text inside images with Gemini 2.5 Flash, then render the translated text back onto the original image. Use this skill when given a local image path and an optional target language.
 ---

-# my-skill
+# gemini-image-translator

-TODO: one-line description.
+Translate text in a local image with Gemini 2.5 Flash OCR + translation, then write the translated text back onto the image with `sharp`.

-> Auth (CLIENT_KEY) is loaded automatically from `~/.openclaw/.env`.
+Set `GEMINI_API_KEY` in the environment before running.

 ## Run

 ```bash
-bun scripts/run.ts <command> [args] [--dry-run]
+bun scripts/run.ts translate <image-path> [target-language] [output-path] [--dry-run]
 ```

 ## Commands

 | Command | Description |
 |---------|-------------|
-| `run <arg>` | TODO: describe |
+| `translate <image-path> [target-language] [output-path]` | OCR the image, translate all detected text to the target language (default `zh-CN`), and save a new image with translated text overlaid. |

 ## Output

-Returns JSON: `{ "status": "success" | "failed", "data": ... }`
+Returns JSON with `status`, `command`, `dryRun`, and `data`.
+
+On success, `data` includes:
+
+- `inputPath`: resolved source image path
+- `outputPath`: generated output image path
+- `targetLanguage`: requested target language
+- `width` / `height`: image dimensions
+- `regions`: detected OCR regions with translated text and pixel bounds
--- a/bun.lock
+++ b/bun.lock
@ -0,0 +1,73 @@
+{
+  "lockfileVersion": 1,
+  "configVersion": 1,
+  "workspaces": {
+    "": {
+      "name": "gemini-image-translator",
+      "dependencies": {
+        "sharp": "^0.34.3",
+      },
+    },
+  },
+  "packages": {
+    "@emnapi/runtime": ["@emnapi/runtime@1.9.0", "", { "dependencies": { "tslib": "^2.4.0" } }, "sha512-QN75eB0IH2ywSpRpNddCRfQIhmJYBCJ1x5Lb3IscKAL8bMnVAKnRg8dCoXbHzVLLH7P38N2Z3mtulB7W0J0FKw=="],
+
+    "@img/colour": ["@img/colour@1.1.0", "", {}, "sha512-Td76q7j57o/tLVdgS746cYARfSyxk8iEfRxewL9h4OMzYhbW4TAcppl0mT4eyqXddh6L/jwoM75mo7ixa/pCeQ=="],
+
+    "@img/sharp-darwin-arm64": ["@img/sharp-darwin-arm64@0.34.5", "", { "optionalDependencies": { "@img/sharp-libvips-darwin-arm64": "1.2.4" }, "os": "darwin", "cpu": "arm64" }, "sha512-imtQ3WMJXbMY4fxb/Ndp6HBTNVtWCUI0WdobyheGf5+ad6xX8VIDO8u2xE4qc/fr08CKG/7dDseFtn6M6g/r3w=="],
+
+    "@img/sharp-darwin-x64": ["@img/sharp-darwin-x64@0.34.5", "", { "optionalDependencies": { "@img/sharp-libvips-darwin-x64": "1.2.4" }, "os": "darwin", "cpu": "x64" }, "sha512-YNEFAF/4KQ/PeW0N+r+aVVsoIY0/qxxikF2SWdp+NRkmMB7y9LBZAVqQ4yhGCm/H3H270OSykqmQMKLBhBJDEw=="],
+
+    "@img/sharp-libvips-darwin-arm64": ["@img/sharp-libvips-darwin-arm64@1.2.4", "", { "os": "darwin", "cpu": "arm64" }, "sha512-zqjjo7RatFfFoP0MkQ51jfuFZBnVE2pRiaydKJ1G/rHZvnsrHAOcQALIi9sA5co5xenQdTugCvtb1cuf78Vf4g=="],
+
+    "@img/sharp-libvips-darwin-x64": ["@img/sharp-libvips-darwin-x64@1.2.4", "", { "os": "darwin", "cpu": "x64" }, "sha512-1IOd5xfVhlGwX+zXv2N93k0yMONvUlANylbJw1eTah8K/Jtpi15KC+WSiaX/nBmbm2HxRM1gZ0nSdjSsrZbGKg=="],
+
+    "@img/sharp-libvips-linux-arm": ["@img/sharp-libvips-linux-arm@1.2.4", "", { "os": "linux", "cpu": "arm" }, "sha512-bFI7xcKFELdiNCVov8e44Ia4u2byA+l3XtsAj+Q8tfCwO6BQ8iDojYdvoPMqsKDkuoOo+X6HZA0s0q11ANMQ8A=="],
+
+    "@img/sharp-libvips-linux-arm64": ["@img/sharp-libvips-linux-arm64@1.2.4", "", { "os": "linux", "cpu": "arm64" }, "sha512-excjX8DfsIcJ10x1Kzr4RcWe1edC9PquDRRPx3YVCvQv+U5p7Yin2s32ftzikXojb1PIFc/9Mt28/y+iRklkrw=="],
+
+    "@img/sharp-libvips-linux-ppc64": ["@img/sharp-libvips-linux-ppc64@1.2.4", "", { "os": "linux", "cpu": "ppc64" }, "sha512-FMuvGijLDYG6lW+b/UvyilUWu5Ayu+3r2d1S8notiGCIyYU/76eig1UfMmkZ7vwgOrzKzlQbFSuQfgm7GYUPpA=="],
+
+    "@img/sharp-libvips-linux-riscv64": ["@img/sharp-libvips-linux-riscv64@1.2.4", "", { "os": "linux", "cpu": "none" }, "sha512-oVDbcR4zUC0ce82teubSm+x6ETixtKZBh/qbREIOcI3cULzDyb18Sr/Wcyx7NRQeQzOiHTNbZFF1UwPS2scyGA=="],
+
+    "@img/sharp-libvips-linux-s390x": ["@img/sharp-libvips-linux-s390x@1.2.4", "", { "os": "linux", "cpu": "s390x" }, "sha512-qmp9VrzgPgMoGZyPvrQHqk02uyjA0/QrTO26Tqk6l4ZV0MPWIW6LTkqOIov+J1yEu7MbFQaDpwdwJKhbJvuRxQ=="],
+
+    "@img/sharp-libvips-linux-x64": ["@img/sharp-libvips-linux-x64@1.2.4", "", { "os": "linux", "cpu": "x64" }, "sha512-tJxiiLsmHc9Ax1bz3oaOYBURTXGIRDODBqhveVHonrHJ9/+k89qbLl0bcJns+e4t4rvaNBxaEZsFtSfAdquPrw=="],
+
+    "@img/sharp-libvips-linuxmusl-arm64": ["@img/sharp-libvips-linuxmusl-arm64@1.2.4", "", { "os": "linux", "cpu": "arm64" }, "sha512-FVQHuwx1IIuNow9QAbYUzJ+En8KcVm9Lk5+uGUQJHaZmMECZmOlix9HnH7n1TRkXMS0pGxIJokIVB9SuqZGGXw=="],
+
+    "@img/sharp-libvips-linuxmusl-x64": ["@img/sharp-libvips-linuxmusl-x64@1.2.4", "", { "os": "linux", "cpu": "x64" }, "sha512-+LpyBk7L44ZIXwz/VYfglaX/okxezESc6UxDSoyo2Ks6Jxc4Y7sGjpgU9s4PMgqgjj1gZCylTieNamqA1MF7Dg=="],
+
+    "@img/sharp-linux-arm": ["@img/sharp-linux-arm@0.34.5", "", { "optionalDependencies": { "@img/sharp-libvips-linux-arm": "1.2.4" }, "os": "linux", "cpu": "arm" }, "sha512-9dLqsvwtg1uuXBGZKsxem9595+ujv0sJ6Vi8wcTANSFpwV/GONat5eCkzQo/1O6zRIkh0m/8+5BjrRr7jDUSZw=="],
+
+    "@img/sharp-linux-arm64": ["@img/sharp-linux-arm64@0.34.5", "", { "optionalDependencies": { "@img/sharp-libvips-linux-arm64": "1.2.4" }, "os": "linux", "cpu": "arm64" }, "sha512-bKQzaJRY/bkPOXyKx5EVup7qkaojECG6NLYswgktOZjaXecSAeCWiZwwiFf3/Y+O1HrauiE3FVsGxFg8c24rZg=="],
+
+    "@img/sharp-linux-ppc64": ["@img/sharp-linux-ppc64@0.34.5", "", { "optionalDependencies": { "@img/sharp-libvips-linux-ppc64": "1.2.4" }, "os": "linux", "cpu": "ppc64" }, "sha512-7zznwNaqW6YtsfrGGDA6BRkISKAAE1Jo0QdpNYXNMHu2+0dTrPflTLNkpc8l7MUP5M16ZJcUvysVWWrMefZquA=="],
+
+    "@img/sharp-linux-riscv64": ["@img/sharp-linux-riscv64@0.34.5", "", { "optionalDependencies": { "@img/sharp-libvips-linux-riscv64": "1.2.4" }, "os": "linux", "cpu": "none" }, "sha512-51gJuLPTKa7piYPaVs8GmByo7/U7/7TZOq+cnXJIHZKavIRHAP77e3N2HEl3dgiqdD/w0yUfiJnII77PuDDFdw=="],
+
+    "@img/sharp-linux-s390x": ["@img/sharp-linux-s390x@0.34.5", "", { "optionalDependencies": { "@img/sharp-libvips-linux-s390x": "1.2.4" }, "os": "linux", "cpu": "s390x" }, "sha512-nQtCk0PdKfho3eC5MrbQoigJ2gd1CgddUMkabUj+rBevs8tZ2cULOx46E7oyX+04WGfABgIwmMC0VqieTiR4jg=="],
+
+    "@img/sharp-linux-x64": ["@img/sharp-linux-x64@0.34.5", "", { "optionalDependencies": { "@img/sharp-libvips-linux-x64": "1.2.4" }, "os": "linux", "cpu": "x64" }, "sha512-MEzd8HPKxVxVenwAa+JRPwEC7QFjoPWuS5NZnBt6B3pu7EG2Ge0id1oLHZpPJdn3OQK+BQDiw9zStiHBTJQQQQ=="],
+
+    "@img/sharp-linuxmusl-arm64": ["@img/sharp-linuxmusl-arm64@0.34.5", "", { "optionalDependencies": { "@img/sharp-libvips-linuxmusl-arm64": "1.2.4" }, "os": "linux", "cpu": "arm64" }, "sha512-fprJR6GtRsMt6Kyfq44IsChVZeGN97gTD331weR1ex1c1rypDEABN6Tm2xa1wE6lYb5DdEnk03NZPqA7Id21yg=="],
+
+    "@img/sharp-linuxmusl-x64": ["@img/sharp-linuxmusl-x64@0.34.5", "", { "optionalDependencies": { "@img/sharp-libvips-linuxmusl-x64": "1.2.4" }, "os": "linux", "cpu": "x64" }, "sha512-Jg8wNT1MUzIvhBFxViqrEhWDGzqymo3sV7z7ZsaWbZNDLXRJZoRGrjulp60YYtV4wfY8VIKcWidjojlLcWrd8Q=="],
+
+    "@img/sharp-wasm32": ["@img/sharp-wasm32@0.34.5", "", { "dependencies": { "@emnapi/runtime": "^1.7.0" }, "cpu": "none" }, "sha512-OdWTEiVkY2PHwqkbBI8frFxQQFekHaSSkUIJkwzclWZe64O1X4UlUjqqqLaPbUpMOQk6FBu/HtlGXNblIs0huw=="],
+
+    "@img/sharp-win32-arm64": ["@img/sharp-win32-arm64@0.34.5", "", { "os": "win32", "cpu": "arm64" }, "sha512-WQ3AgWCWYSb2yt+IG8mnC6Jdk9Whs7O0gxphblsLvdhSpSTtmu69ZG1Gkb6NuvxsNACwiPV6cNSZNzt0KPsw7g=="],
+
+    "@img/sharp-win32-ia32": ["@img/sharp-win32-ia32@0.34.5", "", { "os": "win32", "cpu": "ia32" }, "sha512-FV9m/7NmeCmSHDD5j4+4pNI8Cp3aW+JvLoXcTUo0IqyjSfAZJ8dIUmijx1qaJsIiU+Hosw6xM5KijAWRJCSgNg=="],
+
+    "@img/sharp-win32-x64": ["@img/sharp-win32-x64@0.34.5", "", { "os": "win32", "cpu": "x64" }, "sha512-+29YMsqY2/9eFEiW93eqWnuLcWcufowXewwSNIT6UwZdUUCrM3oFjMWH/Z6/TMmb4hlFenmfAVbpWeup2jryCw=="],
+
+    "detect-libc": ["detect-libc@2.1.2", "", {}, "sha512-Btj2BOOO83o3WyH59e8MgXsxEQVcarkUOpEYrubB0urwnN10yQ364rsiByU11nZlqWYZm05i/of7io4mzihBtQ=="],
+
+    "semver": ["semver@7.7.4", "", { "bin": { "semver": "bin/semver.js" } }, "sha512-vFKC2IEtQnVhpT78h1Yp8wzwrf8CM+MzKMHGJZfBtzhZNycRFnXsHk6E5TxIkkMsgNS7mdX3AGB7x2QM2di4lA=="],
+
+    "sharp": ["sharp@0.34.5", "", { "dependencies": { "@img/colour": "^1.0.0", "detect-libc": "^2.1.2", "semver": "^7.7.3" }, "optionalDependencies": { "@img/sharp-darwin-arm64": "0.34.5", "@img/sharp-darwin-x64": "0.34.5", "@img/sharp-libvips-darwin-arm64": "1.2.4", "@img/sharp-libvips-darwin-x64": "1.2.4", "@img/sharp-libvips-linux-arm": "1.2.4", "@img/sharp-libvips-linux-arm64": "1.2.4", "@img/sharp-libvips-linux-ppc64": "1.2.4", "@img/sharp-libvips-linux-riscv64": "1.2.4", "@img/sharp-libvips-linux-s390x": "1.2.4", "@img/sharp-libvips-linux-x64": "1.2.4", "@img/sharp-libvips-linuxmusl-arm64": "1.2.4", "@img/sharp-libvips-linuxmusl-x64": "1.2.4", "@img/sharp-linux-arm": "0.34.5", "@img/sharp-linux-arm64": "0.34.5", "@img/sharp-linux-ppc64": "0.34.5", "@img/sharp-linux-riscv64": "0.34.5", "@img/sharp-linux-s390x": "0.34.5", "@img/sharp-linux-x64": "0.34.5", "@img/sharp-linuxmusl-arm64": "0.34.5", "@img/sharp-linuxmusl-x64": "0.34.5", "@img/sharp-wasm32": "0.34.5", "@img/sharp-win32-arm64": "0.34.5", "@img/sharp-win32-ia32": "0.34.5", "@img/sharp-win32-x64": "0.34.5" } }, "sha512-Ou9I5Ft9WNcCbXrU9cMgPBcCK8LiwLqcbywW3t4oDV37n1pzpuNLsYiAV8eODnjbtQlSDwZ2cUEeQz4E54Hltg=="],
+
+    "tslib": ["tslib@2.8.1", "", {}, "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w=="],
+  }
+}
--- a/package.json
+++ b/package.json
@ -1,5 +1,5 @@
 {
-  "name": "my-skill",
+  "name": "gemini-image-translator",
  "version": "0.1.0",
  "type": "module",
  "scripts": {
@ -7,6 +7,6 @@
    "build": "bun build scripts/run.ts --outfile dist/run.js --target bun"
  },
  "dependencies": {
-    "@clawd/auth-runtime": "git+http://192.168.0.108:3030/agent-skills/auth-runtime.git"
+    "sharp": "^0.34.3"
  }
 }
--- a/scripts/run.ts
+++ b/scripts/run.ts
@ -1,15 +1,13 @@
 #!/usr/bin/env bun
-import type { Command } from '../src/index.ts';
-import { run } from '../src/index.ts';
-
 function printUsage(): void {
  console.error(`Usage:
-  bun scripts/run.ts [--api-base=<url>] <command> [args...] [--dry-run]
+  bun scripts/run.ts translate <image-path> [target-language] [output-path] [--dry-run]

 Commands:
-  run <arg>
+  translate <image-path> [target-language] [output-path]

-Config: ~/.openclaw/.env  (CLIENT_KEY, API_BASE)
+Config:
+  GEMINI_API_KEY=<your-api-key>
 `);
 }

@ -20,8 +18,6 @@ async function main(): Promise<void> {
  for (const arg of process.argv.slice(2)) {
    if (arg === '--dry-run') {
      dryRun = true;
-    } else if (arg.startsWith('--api-base=')) {
-      process.env.API_BASE = arg.slice('--api-base='.length).trim();
    } else if (arg === '-h' || arg === '--help') {
      printUsage(); process.exit(0);
    } else {
@ -31,7 +27,8 @@ async function main(): Promise<void> {

  if (positionals.length < 1) { printUsage(); process.exit(1); }

-  const result = await run(positionals[0] as Command, positionals.slice(1), dryRun);
+  const { run } = await import('../src/index.ts');
+  const result = await run(positionals[0] as 'translate', positionals.slice(1), dryRun);
  console.log(JSON.stringify(result, null, 2));
 }

--- a/src/index.ts
+++ b/src/index.ts
@ -1,42 +1,348 @@
-import {
-  createEnvConfig,
-  requestApiWithAutoRefresh,
-  type ApiResponse,
-} from '@clawd/auth-runtime';
+import { basename, dirname, extname, join, resolve } from 'node:path';
+import { readFile } from 'node:fs/promises';
+import sharp from 'sharp';

-export type Command = 'run'; // TODO: add your commands
+const GEMINI_MODEL = 'gemini-2.5-flash';
+const GEMINI_API_URL = `https://generativelanguage.googleapis.com/v1beta/models/${GEMINI_MODEL}:generateContent`;
+const DEFAULT_TARGET_LANGUAGE = 'zh-CN';
+
+export type Command = 'translate';
+
+export interface TextRegion {
+  x: number;
+  y: number;
+  width: number;
+  height: number;
+  sourceText: string;
+  translatedText: string;
+}

 export interface RunResult {
  status: 'success' | 'failed';
  command: Command;
  dryRun: boolean;
-  data?: unknown;
+  data?: {
+    inputPath: string;
+    outputPath: string;
+    targetLanguage: string;
+    width: number;
+    height: number;
+    regions: TextRegion[];
+  };
  error?: string;
 }

+interface GeminiRegion {
+  x: number;
+  y: number;
+  width: number;
+  height: number;
+  sourceText: string;
+  translatedText: string;
+}
+
+interface GeminiResponse {
+  regions?: GeminiRegion[];
+}
+
+function ensureApiKey(): string {
+  const apiKey = process.env.GEMINI_API_KEY?.trim();
+  if (!apiKey) {
+    throw new Error('Missing GEMINI_API_KEY');
+  }
+  return apiKey;
+}
+
+function buildPrompt(targetLanguage: string): string {
+  return [
+    'You are an OCR and image translation engine.',
+    `Detect all visible text in the image and translate it into ${targetLanguage}.`,
+    'Return strict JSON only. No markdown, no commentary.',
+    'Use this exact schema:',
+    '{"regions":[{"x":0,"y":0,"width":0,"height":0,"sourceText":"","translatedText":""}]}',
+    'Coordinates must be normalized floats between 0 and 1 relative to the full image.',
+    'Each region should cover one coherent text block.',
+    'If text is already in the target language, keep translatedText close to sourceText.',
+    'If no text is found, return {"regions":[]}.',
+  ].join('\n');
+}
+
+function extractJson(text: string): GeminiResponse {
+  const trimmed = text.trim();
+  const fenced = trimmed.match(/```json\s*([\s\S]*?)\s*```/i) ?? trimmed.match(/```\s*([\s\S]*?)\s*```/);
+  const jsonText = fenced ? fenced[1] : trimmed;
+  return JSON.parse(jsonText) as GeminiResponse;
+}
+
+function clampUnit(value: number): number {
+  if (!Number.isFinite(value)) {
+    return 0;
+  }
+  if (value < 0) {
+    return 0;
+  }
+  if (value > 1) {
+    return 1;
+  }
+  return value;
+}
+
+function sanitizeRegions(regions: GeminiRegion[], width: number, height: number): TextRegion[] {
+  return regions
+    .map((region) => {
+      const x = clampUnit(region.x);
+      const y = clampUnit(region.y);
+      const maxWidth = 1 - x;
+      const maxHeight = 1 - y;
+      const normalizedWidth = Math.min(clampUnit(region.width), maxWidth);
+      const normalizedHeight = Math.min(clampUnit(region.height), maxHeight);
+      const sourceText = String(region.sourceText ?? '').trim();
+      const translatedText = String(region.translatedText ?? '').trim();
+
+      return {
+        x: Math.round(x * width),
+        y: Math.round(y * height),
+        width: Math.max(1, Math.round(normalizedWidth * width)),
+        height: Math.max(1, Math.round(normalizedHeight * height)),
+        sourceText,
+        translatedText,
+      };
+    })
+    .filter((region) => region.sourceText && region.translatedText);
+}
+
+function escapeXml(text: string): string {
+  return text
+    .replaceAll('&', '&amp;')
+    .replaceAll('<', '&lt;')
+    .replaceAll('>', '&gt;')
+    .replaceAll('"', '&quot;')
+    .replaceAll("'", '&apos;');
+}
+
+function createWrappedText(text: string, maxCharsPerLine: number): string[] {
+  const collapsed = text.replace(/\s+/g, ' ').trim();
+  if (!collapsed) {
+    return [];
+  }
+
+  const useWordBoundaries = collapsed.includes(' ');
+  const words = useWordBoundaries ? collapsed.split(' ') : Array.from(collapsed);
+  const lines: string[] = [];
+  let current = '';
+
+  for (const word of words) {
+    const nextLine = useWordBoundaries
+      ? (current ? `${current} ${word}` : word)
+      : `${current}${word}`;
+    if (nextLine.length <= maxCharsPerLine || !current) {
+      current = nextLine;
+    } else {
+      lines.push(current);
+      current = word;
+    }
+  }
+
+  if (current) {
+    lines.push(current);
+  }
+
+  return lines;
+}
+
+function buildRegionSvg(region: TextRegion): string {
+  const padding = Math.max(6, Math.round(Math.min(region.width, region.height) * 0.06));
+  const innerWidth = Math.max(1, region.width - padding * 2);
+  const innerHeight = Math.max(1, region.height - padding * 2);
+  const fontSize = Math.max(14, Math.round(region.height * 0.22));
+  const lineHeight = Math.max(fontSize * 1.2, 16);
+  const maxCharsPerLine = Math.max(6, Math.floor(innerWidth / Math.max(fontSize * 0.55, 1)));
+  const rawLines = createWrappedText(region.translatedText, maxCharsPerLine);
+  const maxLines = Math.max(1, Math.floor(innerHeight / lineHeight));
+  const lines = rawLines.slice(0, maxLines);
+
+  if (rawLines.length > maxLines && lines.length > 0) {
+    const last = lines[lines.length - 1];
+    lines[lines.length - 1] = `${last.slice(0, Math.max(1, last.length - 1)).trimEnd()}…`;
+  }
+
+  const textHeight = lines.length * lineHeight;
+  const startY = padding + Math.max(fontSize, (innerHeight - textHeight) / 2 + fontSize * 0.9);
+  const tspans = lines
+    .map((line, index) => {
+      const dy = index === 0 ? 0 : lineHeight;
+      return `<tspan x="${padding}" dy="${dy}">${escapeXml(line)}</tspan>`;
+    })
+    .join('');
+
+  return [
+    `<svg width="${region.width}" height="${region.height}" xmlns="http://www.w3.org/2000/svg">`,
+    `<rect width="100%" height="100%" rx="${Math.max(4, Math.round(padding * 0.6))}" fill="white" fill-opacity="0.92"/>`,
+    '<text',
+    ` x="${padding}"`,
+    ` y="${startY}"`,
+    ` font-size="${fontSize}"`,
+    ' font-family="Arial, PingFang SC, Microsoft YaHei, Noto Sans CJK SC, sans-serif"',
+    ' font-weight="600"',
+    ' fill="#111827"',
+    '>',
+    tspans,
+    '</text>',
+    '</svg>',
+  ].join('');
+}
+
+async function callGemini(imageBuffer: Buffer, mimeType: string, targetLanguage: string): Promise<GeminiResponse> {
+  const apiKey = ensureApiKey();
+  const response = await fetch(`${GEMINI_API_URL}?key=${encodeURIComponent(apiKey)}`, {
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/json',
+    },
+    body: JSON.stringify({
+      contents: [
+        {
+          parts: [
+            { text: buildPrompt(targetLanguage) },
+            {
+              inlineData: {
+                mimeType,
+                data: imageBuffer.toString('base64'),
+              },
+            },
+          ],
+        },
+      ],
+      generationConfig: {
+        temperature: 0.1,
+        responseMimeType: 'application/json',
+      },
+    }),
+  });
+
+  if (!response.ok) {
+    const errorText = await response.text();
+    throw new Error(`Gemini API request failed: HTTP ${response.status}: ${errorText}`);
+  }
+
+  const payload = await response.json() as {
+    candidates?: Array<{
+      content?: {
+        parts?: Array<{ text?: string }>;
+      };
+    }>;
+  };
+
+  const text = payload.candidates?.[0]?.content?.parts?.map((part) => part.text ?? '').join('').trim();
+  if (!text) {
+    throw new Error('Gemini API returned an empty response');
+  }
+
+  return extractJson(text);
+}
+
+function inferMimeType(inputPath: string): string {
+  const extension = extname(inputPath).toLowerCase();
+  if (extension === '.png') {
+    return 'image/png';
+  }
+  if (extension === '.webp') {
+    return 'image/webp';
+  }
+  if (extension === '.gif') {
+    return 'image/gif';
+  }
+  return 'image/jpeg';
+}
+
+function deriveOutputPath(inputPath: string, targetLanguage: string): string {
+  const extension = extname(inputPath);
+  const name = basename(inputPath, extension);
+  const safeLanguage = targetLanguage.replace(/[^a-z0-9]+/gi, '-').replace(/^-+|-+$/g, '').toLowerCase() || 'translated';
+  return join(dirname(inputPath), `${name}.${safeLanguage}.translated${extension || '.png'}`);
+}
+
+async function translateImage(
+  inputPath: string,
+  targetLanguage: string,
+  outputPath?: string,
+): Promise<RunResult['data']> {
+  const resolvedInputPath = resolve(inputPath);
+  const resolvedOutputPath = resolve(outputPath ? outputPath : deriveOutputPath(resolvedInputPath, targetLanguage));
+  const imageBuffer = await readFile(resolvedInputPath);
+  const baseImage = sharp(imageBuffer);
+  const metadata = await baseImage.metadata();
+  const width = metadata.width;
+  const height = metadata.height;
+
+  if (!width || !height) {
+    throw new Error('Unable to determine image dimensions');
+  }
+
+  const geminiResponse = await callGemini(imageBuffer, inferMimeType(resolvedInputPath), targetLanguage);
+  const regions = sanitizeRegions(geminiResponse.regions ?? [], width, height);
+  const overlays = regions.map((region) => ({
+    input: Buffer.from(buildRegionSvg(region)),
+    left: region.x,
+    top: region.y,
+  }));
+
+  await baseImage.composite(overlays).toFile(resolvedOutputPath);
+
+  return {
+    inputPath: resolvedInputPath,
+    outputPath: resolvedOutputPath,
+    targetLanguage,
+    width,
+    height,
+    regions,
+  };
+}
+
 export async function run(
  command: Command,
  args: string[],
  dryRun: boolean,
 ): Promise<RunResult> {
-  const config = createEnvConfig();
-  const apiBase = (process.env.API_BASE ?? 'https://api-gw-test.yuanwei-lnc.com').replace(/\/$/, '');
-
-  if (command === 'run') {
-    const response: ApiResponse = await requestApiWithAutoRefresh(
-      'POST',
-      `${apiBase}/your/endpoint`,
-      dryRun,
-      config,
-      JSON.stringify({ param: args[0] }),
-    );
-
-    if (response.status < 200 || response.status >= 300) {
-      return { status: 'failed', command, dryRun, error: `HTTP ${response.status}: ${response.body}` };
-    }
-
-    return { status: 'success', command, dryRun, data: JSON.parse(response.body) };
+  if (command !== 'translate') {
+    return { status: 'failed', command, dryRun, error: `unknown command: ${command}` };
  }

-  return { status: 'failed', command, dryRun, error: `unknown command: ${command}` };
+  const [inputPath, targetLanguage = DEFAULT_TARGET_LANGUAGE, outputPath] = args;
+  if (!inputPath) {
+    return {
+      status: 'failed',
+      command,
+      dryRun,
+      error: 'missing image path: translate <image-path> [target-language] [output-path]',
+    };
+  }
+
+  if (dryRun) {
+    return {
+      status: 'success',
+      command,
+      dryRun,
+      data: {
+        inputPath: resolve(inputPath),
+        outputPath: resolve(outputPath ? outputPath : deriveOutputPath(resolve(inputPath), targetLanguage)),
+        targetLanguage,
+        width: 0,
+        height: 0,
+        regions: [],
+      },
+    };
+  }
+
+  try {
+    const data = await translateImage(inputPath, targetLanguage, outputPath);
+    return { status: 'success', command, dryRun, data };
+  } catch (error) {
+    return {
+      status: 'failed',
+      command,
+      dryRun,
+      error: error instanceof Error ? error.message : String(error),
+    };
+  }
 }