From fdacf68269e4e28346dd1298ac5783641d5fa41a Mon Sep 17 00:00:00 2001
From: ryu <114303361+ryuapp@users.noreply.github.com>
Date: Thu, 15 Aug 2024 10:57:30 +0900
Subject: [PATCH] feat: validate css option

---
 deno.json  |  1 +
 src/cli.ts | 22 ++++++++++++++++++++--
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/deno.json b/deno.json
index 4ead951..e8f9266 100644
--- a/deno.json
+++ b/deno.json
@@ -10,6 +10,7 @@
     "dev": "deno run --allow-read --allow-write --allow-env --allow-net=0.0.0.0,127.0.0.1 --allow-run ./src/cli.ts -- README.md",
     "dev:help": "deno run --allow-read --allow-write --allow-env --allow-net=0.0.0.0,127.0.0.1 --allow-run ./src/cli.ts --help",
     "dev:css": "deno run --allow-read --allow-write --allow-env --allow-net=0.0.0.0,127.0.0.1 --allow-run ./src/cli.ts  --css=src/testdata/bluecode.css -- README.md",
+    "dev:invalidcss": "deno run --allow-read --allow-write --allow-env --allow-net=0.0.0.0,127.0.0.1 --allow-run ./src/cli.ts  --css=src/testdata/redcode.css -- README.md",
     "dev:watch": "deno run --allow-read --allow-write --allow-env --allow-net=0.0.0.0,127.0.0.1 --allow-run ./src/cli.ts --watch --  README.md"
   },
   "imports": {
diff --git a/src/cli.ts b/src/cli.ts
index 801e1af..90ceec9 100644
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -13,12 +13,26 @@
 
 import { Spinner } from "@std/cli/spinner";
 import { parseArgs } from "@std/cli/parse-args";
-import { bgBlue, gray, green, underline, yellow } from "@std/fmt/colors";
+import { bgBlue, gray, green, red, underline, yellow } from "@std/fmt/colors";
 import { exists } from "@std/fs/exists";
 import { mdToPdf } from "./md-to-pdf.ts";
 import { getFilename } from "./utils/filename.ts";
 import type { MdToPdfOptions } from "./types.ts";
 
+async function validateArgs(
+  args: {
+    css?: string;
+  },
+): Promise<boolean> {
+  if (typeof args.css === "string") {
+    if (!(await exists(args.css, { isFile: true, isReadable: true }))) {
+      console.error(`${red("error")}: Set CSS file is not found: ${args.css}`);
+      return false;
+    }
+  }
+  return true;
+}
+
 function printHelp(): void {
   const help = `md2pdf: ${
     green("A simple CLI tool for converting markdown to PDF.")
@@ -50,12 +64,16 @@ async function generatePdfFromMarkdown(path: string, options?: MdToPdfOptions) {
   );
 }
 
+// Inline
+
 const args = await parseArgs(Deno.args, {
   boolean: ["w", "watch", "h", "help"],
   string: ["css"],
 });
 
-if (args.h || args.help) {
+if (!(await validateArgs(args))) {
+  Deno.exit(1);
+} else if (args.h || args.help) {
   printHelp();
   Deno.exit(0);
 }