feat: config file at ~/.aicommits (#51)

Co-authored-by: Yu Le <is.yuler@gmail.com>

README.md

@@ -14,20 +14,28 @@
 
 ## Installation and Usage
 
-Install the CLI then grab your [OpenAI key](https://openai.com/api/) and add it as an env variable with the two commands below.
+1. Install the CLI:
 
-1. `npm install -g aicommits`
-2. `export OPENAI_KEY=sk-xxxxxxxxxxxxxxxx`
+    ```sh
+    npm install -g aicommits
+    ```
 
-It's recommended to add the line in #2 to your `.zshrc` or `.bashrc` so it persists instead of having to define it in each terminal session.
+2. Retrieve your API key from [OpenAI](https://platform.openai.com/account/api-keys)
+    > Note: If you haven't already, you'll have to create an account and set up billing.
 
-After doing the two steps above, generate your commit by running `aicommits`.
+3. Set the key so aicommits can use it:
 
-> Note: If you get a EACCESS error on mac/linux when running the first command, try running it with `sudo npm install -g aicommits`.
+    ```sh
+    echo "OPENAI_KEY=<your token>" >> ~/.aicommits
+    ```
+
+4. You're ready to go!
+
+    Run `aicommits` in any Git repo and it will generate a commit message for you.
 
 ## How it works
 
-This CLI tool runs a `git diff` command to grab all the latest changes, sends this to OpenAI's GPT-3, then returns the AI generated commit message. I also want to note that it does cost money since GPT-3 generations aren't free. However, OpenAI gives folks $18 of free credits and commit message generations are cheap so it should be free for a long time.
+This CLI tool runs `git diff` to grab all the latest changes, sends them to OpenAI's GPT-3, then returns the AI generated commit message.
 
 Video coming soon where I rebuild it from scratch to show you how to easily build your own CLI tools powered by AI.
 

package.json

@@ -20,11 +20,13 @@
 	},
 	"dependencies": {
 		"chalk": "^4.1.2",
+		"ini": "^3.0.1",
 		"inquirer": "^8.0.0",
 		"openai": "^3.1.0"
 	},
 	"devDependencies": {
 		"@pvtnbr/eslint-config": "^0.33.0",
+		"@types/ini": "^1.3.31",
 		"@types/node": "^18.13.0",
 		"eslint": "^8.34.0",
 		"typescript": "^4.9.5"

pnpm-lock.yaml

@@ -2,20 +2,24 @@ lockfileVersion: 5.4
 
 specifiers:
   '@pvtnbr/eslint-config': ^0.33.0
+  '@types/ini': ^1.3.31
   '@types/node': ^18.13.0
   chalk: ^4.1.2
   eslint: ^8.34.0
+  ini: ^3.0.1
   inquirer: ^8.0.0
   openai: ^3.1.0
   typescript: ^4.9.5
 
 dependencies:
   chalk: 4.1.2
+  ini: 3.0.1
   inquirer: 8.2.5
   openai: 3.1.0
 
 devDependencies:
   '@pvtnbr/eslint-config': 0.33.0_7kw3g6rralp5ps6mg3uyzz6azm
+  '@types/ini': 1.3.31
   '@types/node': 18.13.0
   eslint: 8.34.0
   typescript: 4.9.5
@@ -141,6 +145,10 @@ packages:
       - typescript
     dev: true
 
+  /@types/ini/1.3.31:
+    resolution: {integrity: sha512-8ecxxaG4AlVEM1k9+BsziMw8UsX0qy3jYI1ad/71RrDZ+rdL6aZB0wLfAuflQiDhkD5o4yJ0uPK3OSUic3fG0w==}
+    dev: true
+
   /@types/json-schema/7.0.11:
     resolution: {integrity: sha512-wOuvG1SN4Us4rez+tylwwwCV1psiNVOkJeM3AUWUNWg/jDQY2+HE/444y5gc+jBmRqASOm2Oeh5c1axHobwRKQ==}
     dev: true
@@ -1487,6 +1495,11 @@ packages:
   /inherits/2.0.4:
     resolution: {integrity: sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==}
 
+  /ini/3.0.1:
+    resolution: {integrity: sha512-it4HyVAUTKBc6m8e1iXWvXSTdndF7HbdN713+kvLrymxTaU4AUBWrJ4vEooP+V7fexnVD3LKcBshjGGPefSMUQ==}
+    engines: {node: ^12.13.0 || ^14.15.0 || >=16.0.0}
+    dev: false
+
   /inquirer/8.2.5:
     resolution: {integrity: sha512-QAgPDQMEgrDssk1XiwwHoOGYF9BAbUcc1+j+FhEvaOt8/cKRqyLn0U5qA6F74fGhTMGxf92pOvPBeh29jQJDTQ==}
     engines: {node: '>=12.0.0'}

src/cli.ts

@@ -3,11 +3,15 @@
 import { execSync } from 'child_process';
 import chalk from 'chalk';
 import inquirer from 'inquirer';
-import { generateCommitMessage } from './utils';
-
-const OPENAI_KEY = process.env.OPENAI_KEY ?? process.env.OPENAI_API_KEY;
+import {
+	getConfig,
+	generateCommitMessage,
+} from './utils';
 
 (async () => {
+	const config = await getConfig();
+	const OPENAI_KEY = process.env.OPENAI_KEY ?? process.env.OPENAI_API_KEY ?? config.OPENAI_KEY;
+
 	console.log(chalk.white('▲ ') + chalk.green('Welcome to AICommits!'));
 
 	if (!OPENAI_KEY) {

src/utils.ts

@@ -1,5 +1,26 @@
+import fs from 'fs/promises';
+import path from 'path';
+import os from 'os';
+import ini from 'ini';
 import { Configuration, OpenAIApi } from 'openai';
 
+const fileExists = (filePath: string) => fs.access(filePath).then(() => true, () => false);
+
+type ConfigType = {
+	OPENAI_KEY?: string;
+};
+
+export const getConfig = async (): Promise<ConfigType> => {
+	const configPath = path.join(os.homedir(), '.aicommits');
+	const configExists = await fileExists(configPath);
+	if (!configExists) {
+		return {};
+	}
+
+	const configString = await fs.readFile(configPath, 'utf8');
+	return ini.parse(configString);
+};
+
 export const generateCommitMessage = async (
 	apiKey: string,
 	prompt: string,