Initial upload: Auto Commit Message Generator with CI/CD workflow

src/git.rs

@@ -0,0 +1,173 @@
+use anyhow::{Context, Result};
+use std::path::Path;
+
+#[derive(Debug, Clone)]
+pub struct ChangedFile {
+    pub path: String,
+    pub status: FileStatus,
+    pub additions: usize,
+    pub deletions: usize,
+    pub is_new: bool,
+    pub is_deleted: bool,
+    pub is_renamed: bool,
+    pub old_path: Option<String>,
+}
+
+#[derive(Debug, Clone, PartialEq)]
+pub enum FileStatus {
+    Added,
+    Deleted,
+    Modified,
+    Renamed,
+    Unknown,
+}
+
+#[derive(Debug)]
+pub struct StagedChanges {
+    pub files: Vec<ChangedFile>,
+    pub diff_text: String,
+}
+
+pub struct GitRepo {
+    repo_path: std::path::PathBuf,
+}
+
+impl GitRepo {
+    pub fn open(path: &Path) -> Result<Self> {
+        let repo = Self::find_repo_at(path)?;
+        Ok(Self { repo_path: repo })
+    }
+
+    fn find_repo_at(path: &Path) -> Result<std::path::PathBuf> {
+        let mut current = Some(path);
+        while let Some(p) = current {
+            let git_dir = p.join(".git");
+            if git_dir.exists() && git_dir.is_dir() {
+                return Ok(p.to_path_buf());
+            }
+            current = p.parent();
+        }
+        anyhow::bail!("Not in a git repository")
+    }
+
+    pub fn find_repo() -> Result<Self> {
+        let current_dir = std::env::current_dir().context("Failed to get current directory")?;
+        Self::open(&current_dir)
+    }
+
+    pub fn get_staged_changes(&self) -> Result<StagedChanges> {
+        let diff_text = self.run_git(&["diff", "--staged", "--no-color"])?;
+        let status_output = self.run_git(&["status", "--porcelain"])?;
+
+        let files = self.parse_status(&status_output)?;
+        let diff_text = diff_text;
+
+        Ok(StagedChanges { files, diff_text })
+    }
+
+    fn parse_status(&self, output: &str) -> Result<Vec<ChangedFile>> {
+        let mut files = Vec::new();
+
+        for line in output.lines() {
+            let line = line.trim();
+            if line.is_empty() {
+                continue;
+            }
+
+            let status_char = line.chars().next().unwrap_or(' ');
+            let xy = line.get(..2).unwrap_or("  ");
+            let (status, is_new, is_deleted, is_renamed) =
+                match (xy.chars().next(), xy.chars().nth(1)) {
+                    (Some('A'), _) => (FileStatus::Added, true, false, false),
+                    (Some('D'), _) => (FileStatus::Deleted, false, true, false),
+                    (Some('R'), _) => (FileStatus::Renamed, false, false, true),
+                    (Some('M'), _) | (Some(_), Some('M')) => {
+                        (FileStatus::Modified, false, false, false)
+                    }
+                    (Some('?'), _) => {
+                        files.push(ChangedFile {
+                            path: line[3..].trim().to_string(),
+                            status: FileStatus::Added,
+                            additions: 0,
+                            deletions: 0,
+                            is_new: true,
+                            is_deleted: false,
+                            is_renamed: false,
+                            old_path: None,
+                        });
+                        continue;
+                    }
+                    _ => (FileStatus::Unknown, false, false, false),
+                };
+
+            let path_parts: Vec<&str> = line[3..].splitn(2, " -> ").collect();
+            let path = path_parts[1].to_string();
+            let old_path = if is_renamed && path_parts.len() > 1 {
+                Some(path_parts[0].to_string())
+            } else {
+                None
+            };
+
+            files.push(ChangedFile {
+                path,
+                status,
+                additions: 0,
+                deletions: 0,
+                is_new,
+                is_deleted,
+                is_renamed,
+                old_path,
+            });
+        }
+
+        Ok(files)
+    }
+
+    fn run_git(&self, args: &[&str]) -> Result<String> {
+        let mut cmd = std::process::Command::new("git");
+        cmd.current_dir(&self.repo_path);
+        cmd.args(args);
+
+        let output = cmd.output().context("Failed to execute git command")?;
+
+        if !output.status.success() {
+            let stderr = String::from_utf8_lossy(&output.stderr);
+            anyhow::bail!("Git command failed: {}", stderr);
+        }
+
+        Ok(String::from_utf8_lossy(&output.stdout).to_string())
+    }
+
+    pub fn create_commit(&self, message: &str, dry_run: bool) -> Result<()> {
+        if dry_run {
+            println!("[DRY-RUN] Would create commit with message:\n{}", message);
+            return Ok(());
+        }
+
+        let mut cmd = std::process::Command::new("git");
+        cmd.current_dir(&self.repo_path);
+        cmd.args(&["commit", "-m", message]);
+
+        let output = cmd.output().context("Failed to execute git commit")?;
+
+        if !output.status.success() {
+            let stderr = String::from_utf8_lossy(&output.stderr);
+            anyhow::bail!("Git commit failed: {}", stderr);
+        }
+
+        println!("Successfully created commit");
+        Ok(())
+    }
+
+    pub fn get_head_commit(&self) -> Result<String> {
+        let output = self.run_git(&["rev-parse", "HEAD"])?;
+        Ok(output.trim().to_string())
+    }
+
+    pub fn has_config(&self) -> Result<bool> {
+        match self.run_git(&["config", "--list"]) {
+            Ok(_) => Ok(true),
+            Err(_) => Ok(false),
+        }
+    }
+}