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Library/zefhemel/Git.md

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+---
+name: Library/zefhemel/Git
+tags: meta/library
+share.uri: "https://github.com/zefhemel/silverbullet-libraries/blob/main/Git.md"
+share.hash: 8b51f35b
+share.mode: pull
+---
+This library adds a basic git synchronization functionality to SilverBullet. It should be considered a successor to [silverbullet-git](https://github.com/silverbulletmd/silverbullet-git) implemented in Space Lua.
+
+The following commands are currently implemented:
+
+${widgets.commandButton("Git: Sync")}
+
+* Adds all files in your folder to git
+* Commits them with the default "Snapshot" commit message
+* `git pull`s changes from the remote server
+* `git push`es changes to the remote server
+
+${widgets.commandButton("Git: Commit")}
+
+* Asks you for a commit message
+* Commits
+
+# Configuration
+There is currently only a single configuration option: `git.autoSync`. When set, the `Git: Sync` command will be run every _x_ minutes.
+
+Example configuration:
+```lua
+config.set("git.autoSync", 5)
+```
+
+# Implementation
+The full implementation of this integration follows.
+
+## Configuration
+```space-lua
+-- priority: 100
+config.define("git", {
+  type = "object",
+  properties = {
+    autoSync = schema.number()
+  }
+})
+```
+
+## Commands
+```space-lua
+git = {}
+
+function checkedShellRun(cmd, args)
+  local r = shell.run(cmd, args)
+  if r.code != 0 then
+    error("Error: " .. r.stdout .. r.stderr, "error")
+  end
+end
+
+function git.localChanges()
+  local r = shell.run("git", {"diff", "--exit-code"})
+  return r.code != 0
+end
+
+function git.commit(message)
+  message = message or "Snapshot"
+  if git.localChanges() then
+    print "Comitting changes..."
+    local ok, message = pcall(function()
+      checkedShellRun("git", {"add", "./*"})
+      checkedShellRun("git", {"commit", "-a", "-m", message})
+    end)
+    if not ok then
+      print("Git commit failed: " .. message)
+    end
+  else
+    print "No local changes to commit"
+  end
+end
+
+function git.sync()
+  git.commit()
+  print "Pulling..."
+  checkedShellRun("git", {"pull"})
+  print "Pushing..."
+  checkedShellRun("git", {"push"})
+end
+
+command.define {
+  name = "Git: Commit",
+  run = function()
+    local message = editor.prompt "Commit message:"
+    git.commit(message)
+  end
+}
+
+command.define {
+  name = "Git: Sync",
+  run = function()
+    git.sync()
+    editor.flashNotification "Done!"
+  end
+}
+
+```
+
+```space-lua
+-- priority: -1
+local autoSync = config.get("git.autoSync")
+if autoSync then
+  print("Enabling git auto sync every " .. autoSync .. " minutes")
+
+  local lastSync = 0
+  
+  event.listen {
+    name = "cron:secondPassed",
+    run = function()
+      local now = os.time()
+      if (now - lastSync)/60 >= autoSync then
+        lastSync = now
+        git.sync()
+      end
+    end
+  }
+end
+
+```