bad vscode, bad

.gitignore

@@ -1,3 +1,4 @@
 /target
 /dist
 .env
+.vscode

src/git/history.rs

@@ -0,0 +1,131 @@
+use anyhow::Result;
+use git2::DiffLine;
+use serde::Serialize;
+use std::path::Path;
+use time::{
+    format_description::well_known::{Iso8601, Rfc2822},
+    OffsetDateTime,
+};
+
+use super::ThreadSafeRepository;
+
+#[derive(Serialize, Clone)]
+pub struct LineChange {
+    pub op: char,
+    pub old_line: Option<u32>,
+    pub new_line: Option<u32>,
+    pub content: String,
+}
+
+#[derive(Serialize, Clone)]
+pub struct CommitInfo {
+    pub oid: String,
+    pub message: String,
+    pub author: String,
+    pub date: String,
+    pub changes: Vec<LineChange>,
+}
+
+impl ThreadSafeRepository {
+    pub fn get_history(&self, path: &Path) -> Result<Vec<CommitInfo>> {
+        let repository = self.repository()?;
+
+        let mut revwalk = repository.revwalk()?;
+        revwalk.push_head()?;
+        revwalk.set_sorting(git2::Sort::TIME | git2::Sort::REVERSE)?;
+
+        let mut history = Vec::new();
+        let mut last_blob = None;
+        for oid in revwalk {
+            // Get commit
+            let oid = oid?;
+            let commit = repository.find_commit(oid)?;
+            let tree = commit.tree()?;
+
+            // Check if file changed in this commit
+            let entry = tree.get_path(path)?;
+            if last_blob == Some(entry.id()) {
+                continue;
+            }
+
+            // Get changes
+            let current = repository.find_blob(entry.id())?;
+            let old = last_blob.and_then(|id| repository.find_blob(id).ok());
+
+            let mut changes = vec![];
+            repository.diff_blobs(
+                old.as_ref(),
+                None,
+                Some(&current),
+                None,
+                None,
+                None,
+                None,
+                None,
+                Some(&mut |_, _, line| {
+                    changes.push(line.into());
+                    true
+                }),
+            )?;
+
+            // Write new blob id to compare against
+            last_blob = Some(entry.id());
+
+            history.push(CommitInfo {
+                oid: commit.id().to_string(),
+                message: commit.message().unwrap_or_default().to_string(),
+                author: commit.author().to_string(),
+                date: OffsetDateTime::from_unix_timestamp(commit.time().seconds())
+                    .unwrap_or_else(|_| OffsetDateTime::now_utc())
+                    .format(&Iso8601::DEFAULT)
+                    .unwrap_or_default(),
+                changes,
+            });
+        }
+
+        Ok(history)
+    }
+
+    pub fn get_file_at_commit(&self, path: &Path, oid: &str) -> Result<String> {
+        // lol codewhisperer autocompleted all this, have fun
+        let repository = self.repository()?;
+        let commit = repository.find_commit(oid.parse()?)?;
+        let tree = commit.tree()?;
+        let entry = tree.get_path(path)?;
+        let blob = repository.find_blob(entry.id())?;
+        Ok(String::from_utf8_lossy(blob.content()).into_owned())
+    }
+}
+
+impl From<DiffLine<'_>> for LineChange {
+    fn from(value: DiffLine<'_>) -> Self {
+        Self {
+            op: value.origin(),
+            old_line: value.old_lineno(),
+            new_line: value.new_lineno(),
+            content: String::from_utf8_lossy(value.content()).into_owned(),
+        }
+    }
+}
+
+impl CommitInfo {
+    pub fn diff(&self) -> Vec<String> {
+        let mut ordered = self.changes.clone();
+        ordered.sort_by(|a, b| {
+            let line_a = a.old_line.or_else(|| a.new_line).unwrap_or_default();
+            let line_b = b.old_line.or_else(|| b.new_line).unwrap_or_default();
+            line_a.cmp(&line_b)
+        });
+        ordered
+            .iter()
+            .map(|change| format!("{} {}", change.op, change.content))
+            .collect()
+    }
+
+    pub fn date_human(&self) -> String {
+        OffsetDateTime::parse(&self.date, &Iso8601::DEFAULT)
+            .ok()
+            .and_then(|date| date.format(&Rfc2822).ok())
+            .unwrap_or_else(|| self.date.clone())
+    }
+}

src/git/mod.rs

@@ -3,6 +3,8 @@ use git2::{ErrorCode, Index, IndexAddOption, Oid, Repository, Signature};
 use std::path::{Path, PathBuf};
 use tracing::info;
 
+pub mod history;
+
 #[derive(Clone)]
 pub struct ThreadSafeRepository {
     pub path: PathBuf,

src/http/response.rs

@@ -1,6 +1,6 @@
 use super::{
     accept::{parse_accept, ResponseType},
-    error::{AppError, ErrorInfo},
+    error::{ErrorInfo, Result},
 };
 use askama::Template;
 use askama_axum::IntoResponse;
@@ -12,7 +12,7 @@ use axum::{
 };
 use serde_json::json;
 
-pub type HandlerResponse = Result<askama_axum::Response, AppError>;
+pub type HandlerResponse = Result<askama_axum::Response>;
 
 struct Response {
     html: String,

src/main.rs

@@ -1,16 +1,18 @@
+use crate::git::{GitConfig, ThreadSafeRepository};
 use crate::http::response::response_interceptor;
 use anyhow::{anyhow, Result};
 use axum::middleware::from_fn;
 use bollard::Docker;
 use clap::Parser;
-use node::git::{GitConfig, ThreadSafeRepository};
 use std::{net::SocketAddr, path::PathBuf};
 use tokio::fs;
 
+mod git;
 mod http;
 mod nix;
 mod node;
 mod route;
+mod stack;
 
 /// GitOps+WebUI for arion-based stacks
 #[derive(Parser, Debug)]

src/node/mod.rs

@@ -1,6 +1,4 @@
 pub mod container;
 pub mod error;
-pub mod git;
 pub mod nix;
-pub mod stack;
 pub mod system;

src/route/container/mod.rs

@@ -1,6 +1,6 @@
 use crate::{
+    http::error::Result,
     node::container::{kill, remove, restart, start, stop},
-    route::AppError,
     AppState,
 };
 use axum::{
@@ -17,7 +17,7 @@ macro_rules! container_command {
     ($cmd: ident) => {
         move |Path(cont_name): Path<String>, State(state): State<AppState>| async move {
             $cmd(&state.docker, &cont_name).await?;
-            Ok(Redirect::to("./")) as Result<Redirect, AppError>
+            Ok(Redirect::to("./")) as Result<Redirect>
         }
     };
 }
@@ -41,7 +41,7 @@ pub(super) fn router() -> Router<AppState> {
             post(
                 move |Path(cont_name): Path<String>, State(state): State<AppState>| async move {
                     remove(&state.docker, &cont_name).await?;
-                    Ok(Redirect::to("/")) as Result<Redirect, AppError>
+                    Ok(Redirect::to("/")) as Result<Redirect>
                 },
             ),
         )

src/route/mod.rs

@@ -1,12 +1,8 @@
 use crate::{
-    http::{
-        error::AppError,
-        response::{reply, HandlerResponse},
-    },
-    node::{
+    http::error::AppError,
+    http::response::{reply, HandlerResponse},
+    node::system::{system_info, SystemInfo},
     stack::{list, NodeInfo},
-        system::{system_info, SystemInfo},
-    },
     AppState,
 };
 use askama::Template;

src/route/stack/check.rs

@@ -1,11 +1,11 @@
 use axum::{extract::State, http::StatusCode};
 
-use crate::{http::error::AppError, node::stack::compose, AppState};
+use crate::{http::error::Result, stack::compose, AppState};
 
 pub(super) async fn check_stack_file(
     State(state): State<AppState>,
     body: String,
-) -> Result<StatusCode, AppError> {
+) -> Result<StatusCode> {
     compose::check(&state.arion_bin, &body).await?;
     Ok(StatusCode::NO_CONTENT)
 }

src/route/stack/create.rs

@@ -4,8 +4,8 @@ use axum::{extract::State, response::Redirect, Form};
 use serde::Deserialize;
 
 use crate::{
-    http::error::AppError,
-    node::stack::{compose, operation},
+    http::error::Result,
+    stack::{compose, operation},
     AppState,
 };
 
@@ -21,7 +21,7 @@ pub(super) struct CreateStackForm {
 pub(super) async fn create_stack(
     State(state): State<AppState>,
     Form(form): Form<CreateStackForm>,
-) -> Result<Redirect, AppError> {
+) -> Result<Redirect> {
     // Make sure body is is ok
     let name = compose::check(&state.arion_bin, &form.source).await?;
 

src/route/stack/delete.rs

@@ -5,7 +5,11 @@ use axum::{
     response::Redirect,
 };
 
-use crate::{http::error::AppError, node::stack::operation, AppState};
+use crate::{
+    http::error::Result,
+    stack::{self, operation},
+    AppState,
+};
 
 #[derive(Template)]
 #[template(path = "stack/delete-one.html")]
@@ -13,14 +17,21 @@ struct ConfirmDeleteTemplate {
     stack_name: String,
 }
 
-pub(super) async fn confirm_deletion_page(Path(stack_name): Path<String>) -> impl IntoResponse {
-    ConfirmDeleteTemplate { stack_name }
+pub(super) async fn confirm_deletion_page(
+    Path(stack_name): Path<String>,
+    State(state): State<AppState>,
+) -> Result<impl IntoResponse> {
+    let project_id = stack::list::stack_name(&state.stack_dir, &stack_name).await?;
+
+    Ok(ConfirmDeleteTemplate {
+        stack_name: project_id,
+    })
 }
 
 pub(super) async fn delete_stack(
     Path(stack_name): Path<String>,
     State(state): State<AppState>,
-) -> Result<Redirect, AppError> {
+) -> Result<Redirect> {
     operation::remove(
         &state.stack_dir,
         &state.arion_bin,

src/route/stack/edit.rs

@@ -6,7 +6,11 @@ use axum::{
 };
 use serde::Deserialize;
 
-use crate::{http::error::AppError, node::stack::arion, node::stack::compose, AppState};
+use crate::{
+    http::error::{AppError, Result},
+    stack::{arion, compose},
+    AppState,
+};
 
 #[derive(Deserialize)]
 pub(super) struct EditStackForm {
@@ -18,7 +22,7 @@ pub(super) async fn edit_stack(
     Path(stack_name): Path<String>,
     State(state): State<AppState>,
     Form(form): Form<EditStackForm>,
-) -> Result<Redirect, AppError> {
+) -> Result<Redirect> {
     let commit_message = if form.commit_message.trim().is_empty() {
         format!("Update {}", stack_name)
     } else {
@@ -39,20 +43,34 @@ pub(super) async fn edit_stack(
     // Make sure file is ok
     compose::check(&state.arion_bin, &source).await?;
 
+    edit_stack_int(state, &stack_name, &source, &commit_message).await?;
+
+    Ok(Redirect::to("./"))
+}
+
+pub(super) async fn edit_stack_int(
+    state: AppState,
+    stack_name: &str,
+    source: &str,
+    commit_message: &str,
+) -> Result<()> {
+    // Make sure file is ok
+    compose::check(&state.arion_bin, &source).await?;
+
     // Write compose file
-    compose::write(&state.stack_dir, &stack_name, &source).await?;
+    compose::write(&state.stack_dir, stack_name, source).await?;
 
     // Git commit
-    compose::commit(state.repository, &stack_name, &commit_message)?;
+    compose::commit(state.repository, stack_name, commit_message)?;
 
     // Update stack
     arion::command(
         &state.stack_dir,
-        &stack_name,
+        stack_name,
         &state.arion_bin,
         arion::StackCommand::Start,
     )
     .await?;
 
-    Ok(Redirect::to("./"))
+    Ok(())
 }

src/route/stack/history.rs

@@ -0,0 +1,75 @@
+use askama::Template;
+use axum::{
+    extract::{Path, State},
+    response::Redirect,
+    Form,
+};
+use serde::Deserialize;
+use serde_json::json;
+
+use crate::{
+    git::history::CommitInfo,
+    http::error::Result,
+    http::response::{reply, HandlerResponse},
+    node::nix::parse_arion_compose,
+    stack::compose,
+    AppState,
+};
+
+use super::edit::edit_stack_int;
+
+#[derive(Template)]
+#[template(path = "stack/history.html")]
+struct HistoryTemplate {
+    stack_name: String,
+    commits: Vec<CommitInfo>,
+}
+
+#[derive(Deserialize)]
+pub(super) struct RestoreForm {
+    oid: String,
+}
+
+pub(super) async fn list(
+    Path(stack_name): Path<String>,
+    State(state): State<AppState>,
+) -> HandlerResponse {
+    let compose_file = compose::get(&state.stack_dir, &stack_name).await?;
+    let info = parse_arion_compose(&compose_file)?;
+
+    let git_compose_path = compose::path(&stack_name);
+    let commits = state.repository.get_history(&git_compose_path)?;
+
+    let mut newest_first = commits.clone();
+    newest_first.reverse();
+
+    reply(
+        json!({
+            "commits": commits,
+        }),
+        HistoryTemplate {
+            stack_name: info.project,
+            commits: newest_first,
+        },
+    )
+}
+
+pub(super) async fn restore(
+    Path(stack_name): Path<String>,
+    State(state): State<AppState>,
+    Form(form): Form<RestoreForm>,
+) -> Result<Redirect> {
+    let path = compose::path(&stack_name);
+    let source = state.repository.get_file_at_commit(&path, &form.oid)?;
+    let short_id = form.oid[..6].to_string();
+
+    edit_stack_int(
+        state,
+        &stack_name,
+        &source,
+        format!("Revert to {}", short_id).as_str(),
+    )
+    .await?;
+
+    Ok(Redirect::to(".."))
+}

src/route/stack/mod.rs

@@ -6,8 +6,8 @@ use axum::{
 };
 
 use crate::{
-    http::error::AppError,
-    node::stack::arion::{command, StackCommand},
+    http::error::Result,
+    stack::arion::{command, StackCommand},
     AppState,
 };
 
@@ -17,13 +17,14 @@ mod check;
 mod create;
 mod delete;
 mod edit;
+mod history;
 mod read;
 
 macro_rules! stack_command {
     ($cmd: expr) => {
         move |Path(stack_name): Path<String>, State(state): State<AppState>| async move {
             command(&state.stack_dir, &stack_name, &state.arion_bin, $cmd).await?;
-            Ok(Redirect::to("./")) as Result<Redirect, AppError>
+            Ok(Redirect::to("./")) as Result<Redirect>
         }
     };
 }
@@ -54,5 +55,6 @@ pub(super) fn router() -> Router<AppState> {
             "/:stack/delete",
             get(delete::confirm_deletion_page).post(delete::delete_stack),
         )
-    //.route("/:stack/history", get(get_stack_history))
+        .route("/:stack/history", get(history::list))
+        .route("/:stack/history/revert", post(history::restore))
 }

src/route/stack/read.rs

@@ -4,14 +4,14 @@ use serde_json::json;
 
 use crate::{
     http::response::{reply, HandlerResponse},
-    node::{container::ContainerInfo, nix::parse_arion_compose, stack},
-    AppState,
+    node::container::ContainerInfo,
+    node::nix::parse_arion_compose,
+    stack, AppState,
 };
 
 #[derive(Template)]
 #[template(path = "stack/get-one.html")]
 struct GetOneTemplate {
-    stack_folder: String,
     stack_name: String,
     file_contents: String,
     containers: Vec<ContainerInfo>,
@@ -33,7 +33,6 @@ pub(super) async fn get_one(
         "containers": containers,
         }),
         GetOneTemplate {
-            stack_folder: stack_name,
             stack_name: info.project,
             file_contents,
             containers: containers.iter().map(|c| c.clone().into()).collect(),

src/stack/compose.rs

@@ -6,8 +6,9 @@ use tempfile::tempdir;
 use tokio::fs;
 
 use crate::{
+    git::ThreadSafeRepository,
     http::error::AppError,
-    node::{error::StackError, git::ThreadSafeRepository, nix::parse_arion_compose},
+    node::{error::StackError, nix::parse_arion_compose},
 };
 
 use super::{arion, utils, COMPOSE_FILE, PACKAGE_CONTENTS, PACKAGE_FILE};
@@ -32,8 +33,8 @@ pub async fn write(base_dir: &Path, stack_name: &str, contents: &str) -> Result<
 }
 
 pub fn commit(repository: ThreadSafeRepository, stack_name: &str, message: &str) -> Result<()> {
-    let compose_path = format!("{}/{}", stack_name, COMPOSE_FILE);
-    repository.commit_files(&[&PathBuf::from(compose_path)], message)?;
+    let compose_path = path(stack_name);
+    repository.commit_files(&[&compose_path], message)?;
     Ok(())
 }
 
@@ -70,3 +71,8 @@ pub async fn check(arion_bin: &Path, source: &str) -> crate::http::error::Result
         Ok(info.project)
     }
 }
+
+#[inline(always)]
+pub fn path(stack_name: &str) -> PathBuf {
+    format!("{}/{}", stack_name, COMPOSE_FILE).into()
+}

src/stack/list.rs

@@ -93,3 +93,10 @@ pub async fn containers(docker: &Docker, stack_name: &str) -> Result<Vec<Contain
         }))
         .await?)
 }
+
+// Shortcut function to get a stack name from directory
+pub async fn stack_name(base_dir: &Path, folder: &str) -> Result<String> {
+    let compose_file = compose::get(base_dir, folder).await?;
+    let info = parse_arion_compose(&compose_file)?;
+    Ok(info.project)
+}

src/stack/mod.rs

@@ -1,6 +1,6 @@
 use serde::Serialize;
 
-use super::container::ContainerInfo;
+use crate::node::container::ContainerInfo;
 
 pub mod arion;
 pub mod compose;

src/stack/operation.rs

@@ -3,7 +3,7 @@ use futures_util::future::try_join;
 use std::path::{Path, PathBuf};
 use tokio::fs;
 
-use crate::node::git::ThreadSafeRepository;
+use crate::git::ThreadSafeRepository;
 
 use super::{arion, COMPOSE_FILE, PACKAGE_CONTENTS, PACKAGE_FILE};
 

static/css/screen.css

@@ -100,6 +100,13 @@ button {
 		color: var(--link-hover);
 		border-color: var(--link-hover);
 	}
+
+	&:disabled {
+		background-color: #323035;
+		border-color: #3C393F;
+		color: #6F6D78;
+		cursor: not-allowed;
+	}
 }
 
 table.table {

templates/base.html

@@ -4,7 +4,7 @@
 <head>
   <meta charset="UTF-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>{% block title %}{{ title }} - staxman{% endblock %}</title>
+  <title>{% block title %}{% endblock %} - staxman</title>
   <link rel="preconnect" href="https://rsms.me/">
   <link rel="stylesheet" href="https://rsms.me/inter/inter.css">
   <link rel="stylesheet" href="https://iosevka-webfonts.github.io/iosevka/iosevka.css">

templates/stack/history.html

@@ -0,0 +1,140 @@
+{% extends "base.html" %}
+
+{% block title %}Stack history for {{stack_name}}{% endblock %}
+
+{% block content %}
+<main>
+	<header>
+		<h1>Stack history for <span class="stack-name">{{stack_name}}</span></h1>
+		<div id="page-actions">
+		</div>
+	</header>
+	<section class="versions">
+		{% for (i, commit) in commits.iter().enumerate() %}
+		<article>
+			<p>
+				<time datetime="{{commit.date}}">{{commit.date_human()}}</time>
+				<span class="commit_id">
+					{{commit.oid[..7]}}
+				</span>
+			</p>
+			<details open>
+				<summary title="{{commit.message}} ({{commit.author}})">
+					{{commit.message}}
+				</summary>
+				<code>
+					{% for line in commit.diff() %}
+					{% match line.chars().next() %}
+					{% when Some with ('+') %}
+					<pre class="add">{{line}}</pre>
+					{% when Some with ('-') %}
+					<pre class="del">{{line}}</pre>
+					{% when _ %}
+					<pre class="context">{{line}}</pre>
+					{% endmatch %}
+					{% endfor %}
+				</code>
+			</details>
+			<div class="actions">
+				{% if i == 0 %}
+				<button disabled>CURRENT</button>
+				{% else %}
+				<form method="POST" action="./history/revert">
+					<input type="hidden" name="oid" value="{{commit.oid}}" />
+					<button type="submit">Revert to this revision</button>
+				</form>
+				{% endif %}
+			</div>
+		</article>
+		{% endfor %}
+	</section>
+</main>
+
+<style scoped>
+	.stack-name {
+		color: var(--text-accent);
+	}
+
+	summary {
+		cursor: pointer;
+	}
+
+	.versions {
+		display: flex;
+		flex-direction: column;
+		gap: 1ch;
+
+		& article {
+			border: 1px solid var(--table-border-color);
+			background-color: var(--table-bg);
+			border-radius: 3px;
+			padding: 8px;
+			display: flex;
+			flex-direction: column;
+			gap: 0.5ch;
+
+			& p {
+				font-size: 9pt;
+				margin: 0;
+
+				& .commit_id::before {
+					content: " - ";
+				}
+			}
+
+			& code {
+				font-size: 10pt;
+				background-color: var(--bg-raised);
+				display: flex;
+				flex-direction: column;
+				border-radius: 5px;
+				padding: 4px 6px;
+				margin-top: 0.5ch;
+			}
+
+			& pre {
+				&.context {
+					color: var(--button-color);
+				}
+
+				&.add {
+					color: var(--success-text);
+				}
+
+				&.del {
+					color: var(--danger-text);
+				}
+			}
+		}
+	}
+
+	.actions {
+		& button {
+			padding: 2px 6px;
+			font-size: 10pt;
+		}
+	}
+
+	header {
+		margin-bottom: 1rem;
+	}
+</style>
+
+<script type="module">
+	const actions = document.getElementById("page-actions");
+	const toggle_text = ["Collapse all", "Expand all"];
+
+	/** @type {HTMLDetailsElement[]} */
+	const versions = [...document.querySelectorAll(".versions details")];
+
+	let toggle = document.createElement("button");
+	toggle.type = "button";
+	toggle.appendChild(document.createTextNode(toggle_text[0]));
+	toggle.addEventListener("click", () => {
+		const index = toggle_text.indexOf(toggle.textContent);
+		versions.forEach(version => { version.open = index == 1 });
+		toggle.textContent = toggle_text[(index + 1) % 2];
+	});
+	actions.appendChild(toggle);
+</script>
+{% endblock %}