feat: global config

+ Implement global configuration feature
  which gives the possibility to store a config file
  in the user home directory that will override the
  default config.

ref: #9
pr: #10

src/coco.tsx

@@ -2,8 +2,8 @@
 
 import { render } from 'ink';
 import React from 'react';
-import {  getConfig } from './common/config/coco.config';
-import { checkGit } from './common/git/commands/check-git';
+import { getConfig } from './common/config/coco.config';
+import { repoPath } from './common/git/commands/repoPath';
 import { listStaged } from './common/git/commands/list-staged';
 import { i18n, LoadDictonary } from './common/i18n/i18n';
 import { CocoApp } from './views/CocoApp';
@@ -12,12 +12,13 @@ import c from 'chalk';
 run();
 
 async function run() {
-    const config = getConfig();
-
+    const currentRepo = await repoPath('.')
     await LoadDictonary();
 
     // check if we are inside a git repo
-    if (await checkGit('.')) {
+    if (currentRepo) {
+        const config = getConfig(currentRepo);
+
         // check repo status
         const staged = await listStaged('.');
 

src/common/config/coco.config.ts

@@ -1,12 +1,13 @@
 import { Config, ConventionalCommitType } from '../types/coco.types';
 import { existsSync, readFileSync } from 'fs';
+import { homedir } from 'os';
 import { parse } from 'yaml';
 
 /** Loads user config file if it exists */
-export function loadUserConfig(cwd = process.cwd()) {
+export function loadConfigFile(path: string) {
     const cfgFileNames = ['coco.yaml', 'coco.yml', '.cocorc'];
     const configPath = cfgFileNames
-        .map((name) => `${cwd}/${name}`)
+        .map((name) => `${path}/${name}`)
         .find((name) => existsSync(name));
 
     if (!configPath) return {};
@@ -108,18 +109,26 @@ const defaultConfig: Config = {
     askBreakingChange: true,
 };
 
-export function getConfig(): Config {
-    const userCfg = loadUserConfig();
+export function getConfig(repoPath: string): Config {
+    const homeDir = homedir();
+    let config = mergeConfig(homeDir, defaultConfig);
+    config = mergeConfig(repoPath, config);
 
-    const config = Object.keys(defaultConfig)
+    return config;            
+}
+
+export function mergeConfig(cwd: string, cfg: Config): Config {
+    const userCfg = loadConfigFile(cwd);
+
+    const config = Object.keys(cfg)
         .map((k): keyof Config => k as keyof Config)
         .reduce((acc, key) => {
             const userOverride = userCfg[key];
-            if (userOverride) {
+            if (userOverride !== undefined) {
                 acc[key] = userCfg[key];
             }
             return acc;
-        }, defaultConfig);
+        }, cfg);
 
     return config;
 }

src/common/git/commands/repoPath.ts

@@ -0,0 +1,9 @@
+import { execute } from '../executer';
+
+/** Gets current repo top-level path */
+export async function repoPath(repo: string): Promise<string> {
+    const command = ['rev-parse', '--show-toplevel'];
+    const { code, out } = await execute(repo, command);
+    if (code !== 0) return undefined;
+    return out?.trim();
+}