feat: diff commit file in file history (#659)

Author: conwnet

extensions/github1s/package.json

@@ -170,6 +170,12 @@
         "category": "GitHub1s",
         "icon": "$(log-in)"
       },
+      {
+        "command": "github1s.commands.diffCommitFile",
+        "title": "Diff File",
+        "category": "GitHub1s",
+        "icon": "$(diff)"
+      },
       {
         "command": "github1s.commands.openCommitOnGitHub",
         "title": "Open on GitHub",
@@ -527,6 +533,11 @@
           "when": "viewItem == 'github1s:viewItems:commitListItem' && github1s:adapters:default:platformName == 'GitHub'",
           "group": "inline@2"
         },
+        {
+          "command": "github1s.commands.diffCommitFile",
+          "when": "viewItem == 'github1s:viewItems:commitListItem' && view == 'github1s.views.fileHistory'",
+          "group": "inline@3"
+        },
         {
           "command": "github1s.commands.openCommitOnGitLab",
           "when": "viewItem == 'github1s:viewItems:commitListItem' && github1s:adapters:default:platformName == 'GitLab'",

extensions/github1s/src/commands/commit.ts

@@ -82,6 +82,20 @@ const commandSwitchToCommit = async (commitItemOrSha?: string | CommitTreeItem)
 	}
 };
 
+const commandDiffCommitFile = async (commitItem: CommitTreeItem) => {
+	const commitSha = commitItem.commit.sha;
+	if (!commitSha) {
+		return;
+	}
+	const { repo } = await router.getState();
+	const activeDocumentUri = vscode.window.activeTextEditor?.document?.uri;
+	const fileUri = activeDocumentUri?.with({
+		authority: `${repo}+${commitSha}`,
+		query: '',
+	});
+	return vscode.commands.executeCommand('github1s.commands.openFilePreviousRevision', fileUri);
+};
+
 // this command is used in `source control commit list view`
 const commandOpenCommitOnOfficialPage = async (commitItemOrSha?: string | CommitTreeItem) => {
 	const commitSha = commitItemOrSha
@@ -127,6 +141,7 @@ export const registerCommitCommands = (context: vscode.ExtensionContext) => {
 		vscode.commands.registerCommand('github1s.commands.refreshCommitList', commandRefreshCommitList),
 		vscode.commands.registerCommand('github1s.commands.searchCommit', commandSwitchToCommit),
 		vscode.commands.registerCommand('github1s.commands.switchToCommit', commandSwitchToCommit),
+		vscode.commands.registerCommand('github1s.commands.diffCommitFile', commandDiffCommitFile),
 		vscode.commands.registerCommand('github1s.commands.openCommitOnGitHub', commandOpenCommitOnOfficialPage),
 		vscode.commands.registerCommand('github1s.commands.openCommitOnGitLab', commandOpenCommitOnOfficialPage),
 		vscode.commands.registerCommand('github1s.commands.openCommitOnBitbucket', commandOpenCommitOnOfficialPage),