feat: Force push next branch to main when it isn't a dev ancestor

Closes kemitix/git-next#21

src/server/actors/repo/branch.rs

@@ -6,6 +6,7 @@ use kxio::network;
 use tracing::{error, info, warn};
 
 use crate::server::{
+    actors::repo::branch,
     config::{self, BranchName},
     forge,
 };
@@ -31,11 +32,31 @@ pub async fn validate_positions(
             return;
         }
     };
-
     let Some(main) = commit_histories.main.first().cloned() else {
         warn!("No commits on main branch '{}'", config.branches().main());
         return;
     };
+    // verify that next is an ancestor of dev, and force update to it main if it isn't
+    let Some(next) = commit_histories.next.first().cloned() else {
+        warn!("No commits on next branch '{}", config.branches().next());
+        return;
+    };
+    let next_is_ancestor_of_dev = commit_histories.dev.iter().any(|dev| dev == &next);
+    if !next_is_ancestor_of_dev {
+        info!("Next is not an ancestor of dev - resetting next to main");
+        if branch::reset(
+            &config.branches().next(),
+            main,
+            ResetForce::Force(next.into()),
+            &repo_details,
+        )
+        .is_ok()
+        {
+            addr.do_send(super::ValidateRepo)
+        }
+        return;
+    }
+
     let next_commits = commit_histories
         .next
         .into_iter()
@@ -182,7 +203,7 @@ pub async fn advance_main(
     };
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone)]
 pub struct GitRef(pub String);
 impl From<forge::Commit> for GitRef {
     fn from(value: forge::Commit) -> Self {
@@ -196,13 +217,19 @@ impl From<BranchName> for GitRef {
 }
 impl Display for GitRef {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "{:?}", self)
+        write!(f, "{}", self.0)
     }
 }
-#[allow(dead_code)] // TODO: (#21) use to force-update next to main when it isn't a dev ancestor
+
+pub enum ResetForce {
+    #[allow(dead_code)]
+    Normal,
+    Force(GitRef),
+}
 pub fn reset(
     branch: &BranchName,
     gitref: impl Into<GitRef>,
+    reset_force: ResetForce,
     repo_details: &config::RepoDetails,
 ) -> Result<(), std::io::Error> {
     let gitref: GitRef = gitref.into();
@@ -210,9 +237,13 @@ pub fn reset(
     let token = &repo_details.forge.token;
     let hostname = &repo_details.forge.hostname;
     let path = &repo_details.repo;
-    let command =
-        format!("/usr/bin/git push https://{user}:{token}@{hostname}/{path}.git {gitref}:{branch}");
-    // info!("Running command: {}", command);
+    let origin = format!("https://{user}:{token}@{hostname}/{path}.git");
+    let force = match reset_force {
+        ResetForce::Normal => "".to_string(),
+        ResetForce::Force(old_ref) => format!("--force-with-lease={branch}:{old_ref}"),
+    };
+    let command = format!("/usr/bin/git push {origin} {gitref}:{branch} {force}");
+    info!("Running command: {}", command);
     match gix::command::prepare(command)
         .with_shell_allow_argument_splitting()
         .spawn()

src/server/actors/repo/mod.rs

@@ -70,14 +70,26 @@ impl Handler<LoadedConfig> for RepoActor {
     fn handle(&mut self, msg: LoadedConfig, ctx: &mut Self::Context) -> Self::Result {
         let config = msg.0;
         info!(%self.details, %config, "Config loaded");
-        self.config.replace(config.clone());
+        self.config.replace(config);
+        ctx.address().do_send(ValidateRepo);
+    }
+}
+
+#[derive(Message)]
+#[rtype(result = "()")]
+pub struct ValidateRepo;
+impl Handler<ValidateRepo> for RepoActor {
+    type Result = ();
+    fn handle(&mut self, _msg: ValidateRepo, ctx: &mut Self::Context) -> Self::Result {
+        if let Some(repo_config) = self.config.clone() {
             let repo_details = self.details.clone();
             let addr = ctx.address();
             let net = self.net.clone();
-        branch::validate_positions(repo_details, config, addr, net)
+            branch::validate_positions(repo_details, repo_config, addr, net)
                 .into_actor(self)
                 .wait(ctx);
         }
+    }
 }
 
 #[derive(Debug, Message)]

src/server/forge/forgejo/mod.rs

@@ -14,11 +14,23 @@ pub async fn get_commit_histories(
     config: &server::config::RepoConfig,
     net: &kxio::network::Network,
 ) -> Result<CommitHistories, OneOf<(network::NetworkError,)>> {
-    let main = (get_commit_history(repo_details, &config.branches().main(), None, net).await)?;
-    let next =
-        (get_commit_history(repo_details, &config.branches().next(), Some(&main[0]), net).await)?;
-    let dev =
-        (get_commit_history(repo_details, &config.branches().dev(), Some(&next[0]), net).await)?;
+    let main = (get_commit_history(repo_details, &config.branches().main(), vec![], net).await)?;
+    let main_head = main[0].clone();
+    let next = (get_commit_history(
+        repo_details,
+        &config.branches().next(),
+        vec![main_head.clone()],
+        net,
+    )
+    .await)?;
+    let next_head = next[0].clone();
+    let dev = (get_commit_history(
+        repo_details,
+        &config.branches().dev(),
+        vec![next_head, main_head],
+        net,
+    )
+    .await)?;
     info!(
         main = main.len(),
         next = next.len(),
@@ -33,16 +45,16 @@ pub async fn get_commit_histories(
 async fn get_commit_history(
     repo_details: &server::config::RepoDetails,
     branch_name: &BranchName,
-    find_commit: Option<&forge::Commit>,
+    find_commits: Vec<forge::Commit>,
     net: &kxio::network::Network,
 ) -> Result<Vec<forge::Commit>, OneOf<(network::NetworkError,)>> {
     let hostname = &repo_details.forge.hostname;
     let path = &repo_details.repo;
     let token = &repo_details.forge.token;
     let mut page = 1;
-    let limit = match find_commit {
-        Some(_) => 100,
-        None => 1,
+    let limit = match find_commits.is_empty() {
+        true => 1,
+        false => 50,
     };
     let mut all_commits = Vec::new();
     loop {
@@ -73,9 +85,11 @@ async fn get_commit_history(
             .map(|sha| forge::Commit { sha })
             .collect::<Vec<_>>();
 
-        let found = find_commit.map_or(true, |find_commit| {
-            commits.iter().any(|commit| commit == find_commit)
-        });
+        let found = find_commits.is_empty()
+            || find_commits
+                .clone()
+                .into_iter()
+                .any(|find_commit| commits.iter().any(|commit| commit == &find_commit));
         let at_end = commits.len() < limit;
         all_commits.extend(commits);
         if found || at_end {