WIP: git::remote_branches

crates/git/src/branch.rs

@@ -11,6 +11,12 @@ pub enum Error {
     Fetch(git::fetch::Error),
 
     Push(git::push::Error),
+
+    Lock,
+
+    Generic(String),
+    I1(gix::reference::iter::Error),
+    I2(gix::reference::iter::init::Error),
 }
 impl std::error::Error for Error {}
 

crates/git/src/repository/mock.rs

@@ -15,7 +15,7 @@ use crate::{
     },
     GitRemote, RepoDetails,
 };
-use git_next_config::GitDir;
+use git_next_config as config;
 
 #[derive(Debug, Default, Clone)]
 pub struct MockRepository(Arc<Mutex<Reality>>);
@@ -23,7 +23,7 @@ impl MockRepository {
     pub fn new() -> Self {
         Self(Arc::new(Mutex::new(Reality::default())))
     }
-    pub fn can_open_repo(&mut self, gitdir: &GitDir) -> Result<MockOpenRepository> {
+    pub fn can_open_repo(&mut self, gitdir: &config::GitDir) -> Result<MockOpenRepository> {
         self.0
             .lock()
             .map_err(|_| Error::MockLock)
@@ -31,7 +31,7 @@ impl MockRepository {
     }
     fn open_repository(
         &self,
-        gitdir: &GitDir,
+        gitdir: &config::GitDir,
     ) -> std::result::Result<MockOpenRepository, crate::repository::Error> {
         self.0.lock().map_err(|_| Error::MockLock).and_then(|r| {
             r.open_repository(gitdir)
@@ -47,7 +47,7 @@ impl MockRepository {
 impl RepositoryLike for MockRepository {
     fn open(
         &self,
-        gitdir: &GitDir,
+        gitdir: &config::GitDir,
     ) -> std::result::Result<OpenRepository, crate::repository::Error> {
         Ok(OpenRepository::Mock(self.open_repository(gitdir)?))
     }
@@ -62,10 +62,10 @@ impl RepositoryLike for MockRepository {
 
 #[derive(Debug, Default)]
 pub struct Reality {
-    openable_repos: HashMap<GitDir, MockOpenRepository>,
+    openable_repos: HashMap<config::GitDir, MockOpenRepository>,
 }
 impl Reality {
-    pub fn can_open_repo(&mut self, gitdir: &GitDir) -> MockOpenRepository {
+    pub fn can_open_repo(&mut self, gitdir: &config::GitDir) -> MockOpenRepository {
         let mor = self.openable_repos.get(gitdir);
         match mor {
             Some(mor) => mor.clone(),
@@ -76,7 +76,7 @@ impl Reality {
             }
         }
     }
-    pub fn open_repository(&self, gitdir: &GitDir) -> Option<MockOpenRepository> {
+    pub fn open_repository(&self, gitdir: &config::GitDir) -> Option<MockOpenRepository> {
         self.openable_repos.get(gitdir).cloned()
     }
 }
@@ -109,6 +109,12 @@ impl InnerMockOpenRepository {
 
 #[allow(clippy::unwrap_used)]
 impl OpenRepositoryLike for MockOpenRepository {
+    fn remote_branches(&self) -> git::branch::Result<Vec<config::BranchName>> {
+        self.inner
+            .lock()
+            .map(|inner| inner.remote_branches())
+            .unwrap()
+    }
     fn find_default_remote(&self, direction: Direction) -> Option<GitRemote> {
         self.inner
             .lock()
@@ -156,6 +162,9 @@ impl OpenRepositoryLike for MockOpenRepository {
     }
 }
 impl OpenRepositoryLike for InnerMockOpenRepository {
+    fn remote_branches(&self) -> git::branch::Result<Vec<config::BranchName>> {
+        todo!();
+    }
     fn find_default_remote(&self, direction: Direction) -> Option<GitRemote> {
         match direction {
             Direction::Push => self.default_push_remote.clone(),

crates/git/src/repository/open/mod.rs

@@ -28,6 +28,7 @@ impl OpenRepository {
     }
 }
 pub trait OpenRepositoryLike {
+    fn remote_branches(&self) -> git::branch::Result<Vec<config::BranchName>>;
     fn find_default_remote(&self, direction: Direction) -> Option<git::GitRemote>;
     fn fetch(&self) -> Result<(), git::fetch::Error>;
     fn push(

crates/git/src/repository/open/oreal.rs

@@ -1,5 +1,6 @@
 //
 use crate as git;
+use config::BranchName;
 use git_next_config as config;
 
 use gix::bstr::BStr;
@@ -9,6 +10,28 @@ use tracing::{info, warn};
 #[derive(Clone, Debug, derive_more::Constructor)]
 pub struct RealOpenRepository(Arc<Mutex<gix::Repository>>);
 impl super::OpenRepositoryLike for RealOpenRepository {
+    fn remote_branches(&self) -> git::branch::Result<Vec<config::BranchName>> {
+        let refs = self
+            .0
+            .lock()
+            .map_err(|_| git::branch::Error::Lock)
+            .and_then(|repo| {
+                Ok(repo.references()?).and_then(|refs| {
+                    Ok(refs.remote_branches().map(|rb| {
+                        rb.filter_map(|rbi| rbi.ok())
+                            .map(|r| r.name().to_owned())
+                            .map(|n| n.to_string())
+                            .filter_map(|p| {
+                                p.strip_prefix("refs/remotes/origin/").map(|v| v.to_owned())
+                            })
+                            .filter(|b| b.as_str() != "HEAD")
+                            .map(BranchName::new)
+                            .collect::<Vec<_>>()
+                    })?)
+                })
+            })?;
+        Ok(refs)
+    }
     fn find_default_remote(&self, direction: git::repository::Direction) -> Option<git::GitRemote> {
         let Ok(repository) = self.0.lock() else {
             #[cfg(not(tarpaulin_include))] // don't test mutex lock failure

crates/repo-actor/src/load.rs

@@ -1,7 +1,7 @@
 //
 use actix::prelude::*;
 
-use tracing::{error, info};
+use tracing::{error, info, warn};
 
 use git_next_config as config;
 use git_next_forge as forge;
@@ -18,7 +18,7 @@ pub async fn load_file(
     open_repository: git::OpenRepository,
 ) {
     info!("Loading .git-next.toml from repo");
-    let repo_config = match load(&repo_details, &forge, open_repository).await {
+    let repo_config = match load(&repo_details, &forge, &open_repository).await {
         Ok(repo_config) => repo_config,
         Err(err) => {
             error!(?err, "Failed to load config");
@@ -32,11 +32,11 @@ pub async fn load_file(
 async fn load(
     details: &git::RepoDetails,
     forge: &forge::Forge,
-    open_repository: git::OpenRepository,
+    open_repository: &git::OpenRepository,
 ) -> Result<config::RepoConfig, Error> {
     let contents = open_repository.read_file(&details.branch, ".git-next.toml")?;
     let config = config::RepoConfig::load(&contents)?;
-    let config = validate(config, forge).await?;
+    let config = validate(config, forge, open_repository).await?;
     Ok(config)
 }
 
@@ -45,18 +45,46 @@ pub enum Error {
     File(git::file::Error),
     Config(config::server::Error),
     Toml(toml::de::Error),
-    Forge(git::branch::Error),
+    Branch(git::branch::Error),
     BranchNotFound(config::BranchName),
 }
 
 pub async fn validate(
     config: config::RepoConfig,
     forge: &forge::Forge,
+    open_repository: &git::OpenRepository,
 ) -> Result<config::RepoConfig, Error> {
+    let new = open_repository.remote_branches();
     let branches = forge.branches_get_all().await.map_err(|e| {
         error!(?e, "Failed to list branches");
-        Error::Forge(e)
-    })?;
+        Error::Branch(e)
+    });
+    let branches = match (branches, new) {
+        (Ok(old), Ok(new)) => {
+            if old == new {
+                info!("remote_branches old and new match");
+            } else {
+                warn!("remote_branches old and new differ:");
+                warn!("old: {old:?}");
+                warn!("new: {new:?}");
+            }
+            Ok(old)
+        }
+        (Ok(old), Err(new)) => {
+            warn!("remote_branches old okay, new error: {new:?}");
+            Ok(old)
+        }
+        (Err(old), Ok(_new)) => {
+            warn!("remote_branches new okay, old error: {old:?}");
+            Err(old)
+        }
+        (Err(old), Err(new)) => {
+            warn!("remote_branches both error:");
+            warn!("old: {old:?}");
+            warn!("new: {new:?}");
+            Err(old)
+        }
+    }?;
     if !branches
         .iter()
         .any(|branch| branch == &config.branches().main())