From 705c1cfdd7926fd7896877fff5ee661ab42293a0 Mon Sep 17 00:00:00 2001
From: carloscz <holubec.jan@seznam.cz>
Date: Fri, 8 Jul 2016 15:40:19 +0200
Subject: [PATCH] Shows commit hash and message

When Git Blame command is executed executed
---
 src/extension.ts | 44 +++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 41 insertions(+), 3 deletions(-)

diff --git a/src/extension.ts b/src/extension.ts
index f4b7a427..2d7516d0 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -15,15 +15,15 @@ export function activate(context: ExtensionContext) {
         return;
     }
 
+    const workspaceRoot = workspace.rootPath;
     commands.registerCommand('extension.blame', () => {
-        // TODO - add some more info about the blame
-        window.showInformationMessage('Hello World!');
+        showMessage(context, workspaceRoot);
     });
 
     // Try to find the repo first in the workspace, then in parent directories
     // because sometimes one opens a subdirectory but still wants information
     // about the full repo.
-    lookupRepo(context, workspace.rootPath);
+    lookupRepo(context, workspaceRoot);
 }
 
 function lookupRepo(context: ExtensionContext, repoDir: string) {
@@ -48,5 +48,43 @@ function lookupRepo(context: ExtensionContext, repoDir: string) {
     });
 }
 
+function showMessage(context: ExtensionContext, repoDir: string)
+{
+    const repoPath = path.join(repoDir, '.git');
+
+    fs.access(repoPath, (err) => {
+        if (err) {
+            // No access to git repo or no repo, try to go up.
+            const parentDir = path.dirname(repoDir);
+            if (parentDir != repoDir) {
+                showMessage(context, parentDir);
+            }
+        }
+        else {
+            const editor = window.activeTextEditor;
+            
+            if (!editor) return;
+
+            const doc = editor.document;
+
+            if (!doc) return;
+            if (doc.isUntitled) return; // Document hasn't been saved and is not in git.
+
+            const gitBlame = new GitBlame(repoPath, gitBlameShell);
+            const lineNumber = editor.selection.active.line + 1; // line is zero based
+            const file = path.relative(repoDir, editor.document.fileName);
+
+            gitBlame.getBlameInfo(file).then((info) => {
+
+            if (lineNumber in info['lines']) {
+            
+                const hash = info['lines'][lineNumber]['hash'];
+                const commitInfo = info['commits'][hash];
+
+                window.showInformationMessage(hash + ' ' + commitInfo['summary']);
+        }
+    });
+}
+