check if commit exists through message name

Signed-off-by: shmck <shawn.j.mckay@gmail.com>

Author: ShMcK

src/services/git/index.ts

@@ -160,3 +160,35 @@ export async function loadCommitHistory(): Promise<string[]> {
 export function getShortHash(hash: string): string {
   return hash.slice(0, 7)
 }
+
+export async function getCommitMessage(hash: string): Promise<string | null> {
+  try {
+    // returns an list of commit hashes
+    const { stdout, stderr } = await exec({ command: `git log -n 1 --pretty=format:%s ${hash}` })
+    if (stderr) {
+      return null
+    }
+    // string match on remote output
+    return stdout
+  } catch (error) {
+    logger('error', error)
+    // likely no git commit message found
+    return null
+  }
+}
+
+export async function commitsExistsByMessage(message: string): Promise<boolean> {
+  try {
+    // returns an list of commit hashes
+    // note: may not work with quotes in message
+    const { stdout, stderr } = await exec({ command: `git log -g --grep='${message}'` })
+    if (stderr) {
+      return false
+    }
+    return !!stdout.length
+  } catch (error) {
+    logger('error', error)
+    // likely no commit found
+    return false
+  }
+}

src/services/hooks/index.ts

@@ -1,6 +1,6 @@
 import * as TT from 'typings/tutorial'
 import * as git from '../git'
-import loadCommits from './utils/loadCommits'
+import { loadCommits } from './utils/commits'
 import { loadWatchers, resetWatchers } from './utils/watchers'
 import openFiles from './utils/openFiles'
 import runCommands from './utils/runCommands'

src/services/hooks/utils/commits.ts

@@ -0,0 +1,23 @@
+import * as git from '../../git'
+
+// avoid duplicate commits
+const verifyCommitUnique = async (hash: string): Promise<boolean> => {
+  const message: string | null = await git.getCommitMessage(hash)
+  if (!message) {
+    return false
+  }
+  const exists: boolean = await git.commitsExistsByMessage(message)
+  return exists
+}
+
+export const loadCommits = async (commits: string[] = []): Promise<void> => {
+  if (commits && commits.length) {
+    // load the current list of commits for validation
+    for (const commit of commits) {
+      const commitExists = await verifyCommitUnique(commit)
+      if (!commitExists) {
+        await git.loadCommit(commit)
+      }
+    }
+  }
+}

src/services/hooks/utils/loadCommits.ts

@@ -1,6 +1,6 @@
 import { LOG } from '../../environment'
 
-export type Log = string | number | object | null | undefined // eslint-disable-line
+export type Log = any
 
 const logger = (...messages: Log[]): void => {
   if (!LOG) {