432 lines
13 KiB
Rust
432 lines
13 KiB
Rust
use std::fs;
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use std::path::Path;
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use rusqlite::Connection;
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use uuid::Uuid;
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use crate::db::queries::script as qs;
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use crate::engine::{EngineError, EngineResult};
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use crate::model::{Script, ScriptKind, ScriptStatus};
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use crate::util::frontmatter::{write_script_file, ScriptFrontmatter};
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use crate::util::{atomic_write_str, ensure_unique, now_unix_ms, slugify};
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/// Create a new draft script. Content stored in DB, no file written.
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pub fn create_script(
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conn: &Connection,
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project_id: &str,
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title: &str,
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kind: ScriptKind,
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content: &str,
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entrypoint: Option<&str>,
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) -> EngineResult<Script> {
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let slug_source = if title.is_empty() { "untitled" } else { title };
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let base_slug = slugify(slug_source);
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let base_slug = if base_slug.is_empty() {
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"untitled".to_string()
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} else {
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base_slug
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};
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let slug = ensure_unique(&base_slug, |candidate| {
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qs::get_script_by_slug(conn, project_id, candidate).is_ok()
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});
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let now = now_unix_ms();
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let id = Uuid::new_v4().to_string();
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let script = Script {
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id,
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project_id: project_id.to_string(),
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slug,
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title: title.to_string(),
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kind,
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entrypoint: entrypoint.unwrap_or("render").to_string(),
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enabled: true,
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version: 1,
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file_path: String::new(),
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status: ScriptStatus::Draft,
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content: Some(content.to_string()),
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created_at: now,
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updated_at: now,
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};
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qs::insert_script(conn, &script)?;
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Ok(script)
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}
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/// Update a script's metadata and/or content. Bumps version.
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pub fn update_script(
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conn: &Connection,
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script_id: &str,
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project_id: &str,
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title: Option<&str>,
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slug: Option<&str>,
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kind: Option<ScriptKind>,
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entrypoint: Option<&str>,
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enabled: Option<bool>,
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content: Option<&str>,
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) -> EngineResult<Script> {
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let mut script = qs::get_script_by_id(conn, script_id)?;
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// Slug uniqueness
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if let Some(new_slug) = slug {
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if new_slug != script.slug {
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if qs::get_script_by_slug(conn, project_id, new_slug).is_ok() {
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return Err(EngineError::Conflict(format!(
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"script slug '{new_slug}' already exists"
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)));
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}
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}
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}
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if let Some(t) = title {
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script.title = t.to_string();
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}
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if let Some(s) = slug {
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script.slug = s.to_string();
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}
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if let Some(k) = kind {
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script.kind = k;
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}
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if let Some(ep) = entrypoint {
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script.entrypoint = ep.to_string();
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}
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if let Some(e) = enabled {
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script.enabled = e;
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}
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if let Some(c) = content {
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script.content = Some(c.to_string());
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}
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// If published, transition back to draft on edit
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if script.status == ScriptStatus::Published {
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script.status = ScriptStatus::Draft;
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}
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script.version += 1;
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script.updated_at = now_unix_ms();
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qs::update_script(conn, &script)?;
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Ok(script)
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}
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/// Save script content (editor save). Updates DB, bumps version.
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pub fn save_script(
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conn: &Connection,
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script_id: &str,
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content: &str,
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) -> EngineResult<Script> {
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let mut script = qs::get_script_by_id(conn, script_id)?;
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script.content = Some(content.to_string());
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script.version += 1;
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script.updated_at = now_unix_ms();
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if script.status == ScriptStatus::Published {
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script.status = ScriptStatus::Draft;
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}
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qs::update_script(conn, &script)?;
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Ok(script)
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}
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/// Validate Lua script syntax. Returns Ok(()) or a parse error message.
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pub fn validate_script_syntax(content: &str) -> Result<(), String> {
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// Basic validation: balanced block structures
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validate_lua_blocks(content)?;
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Ok(())
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}
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/// Discover entrypoint function names from Lua source.
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/// Returns list of function names, with "main" always first if present.
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pub fn discover_entrypoints(content: &str) -> Vec<String> {
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let mut funcs = Vec::new();
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for line in content.lines() {
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let trimmed = line.trim();
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if trimmed.starts_with("function ") {
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// Extract function name: "function name(" or "function name (..."
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let rest = trimmed.strip_prefix("function ").unwrap_or("").trim();
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if let Some(name) = rest.split(&['(', ' '][..]).next() {
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let name = name.trim();
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if !name.is_empty() && !name.contains('.') && !name.contains(':') {
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funcs.push(name.to_string());
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}
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}
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}
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}
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// Ensure "main" is first if present
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if let Some(pos) = funcs.iter().position(|n| n == "main") {
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funcs.remove(pos);
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funcs.insert(0, "main".to_string());
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}
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funcs
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}
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/// Publish a script: write frontmatter+body to file, clear content in DB.
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pub fn publish_script(
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conn: &Connection,
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data_dir: &Path,
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script_id: &str,
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) -> EngineResult<Script> {
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let mut script = qs::get_script_by_id(conn, script_id)?;
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if script.status == ScriptStatus::Published {
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return Err(EngineError::Conflict(
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"script is already published".to_string(),
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));
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}
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let body = script.content.clone().unwrap_or_default();
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// Validate before publishing
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validate_script_syntax(&body).map_err(EngineError::Validation)?;
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let now = now_unix_ms();
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let rel_path = format!("scripts/{}.lua", script.slug);
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let abs_path = data_dir.join(&rel_path);
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// Ensure scripts/ directory exists
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if let Some(parent) = abs_path.parent() {
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fs::create_dir_all(parent)?;
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}
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let fm = ScriptFrontmatter {
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id: script.id.clone(),
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project_id: Some(script.project_id.clone()),
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slug: script.slug.clone(),
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title: script.title.clone(),
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kind: script_kind_to_frontmatter(&script.kind),
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entrypoint: script.entrypoint.clone(),
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enabled: script.enabled,
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version: script.version,
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created_at: script.created_at,
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updated_at: now,
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};
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let file_content = write_script_file(&fm, &body);
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atomic_write_str(&abs_path, &file_content)?;
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script.status = ScriptStatus::Published;
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script.file_path = rel_path;
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script.content = None;
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script.updated_at = now;
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qs::update_script(conn, &script)?;
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Ok(script)
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}
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/// Unpublish a script: read content from file back into DB, set status to draft.
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pub fn unpublish_script(
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conn: &Connection,
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data_dir: &Path,
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script_id: &str,
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) -> EngineResult<Script> {
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let mut script = qs::get_script_by_id(conn, script_id)?;
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if script.status != ScriptStatus::Published {
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return Err(EngineError::Conflict(
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"script is not published".to_string(),
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));
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}
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if !script.file_path.is_empty() {
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let abs_path = data_dir.join(&script.file_path);
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if abs_path.exists() {
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let file_content = fs::read_to_string(&abs_path)?;
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let (_fm, body) = crate::util::frontmatter::read_script_file(&file_content)
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.map_err(EngineError::Parse)?;
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script.content = Some(body);
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}
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}
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script.status = ScriptStatus::Draft;
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script.updated_at = now_unix_ms();
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qs::update_script(conn, &script)?;
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Ok(script)
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}
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/// Delete a script and its file.
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pub fn delete_script(
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conn: &Connection,
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data_dir: &Path,
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script_id: &str,
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) -> EngineResult<()> {
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let script = qs::get_script_by_id(conn, script_id)?;
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// Delete file if exists
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if !script.file_path.is_empty() {
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let abs_path = data_dir.join(&script.file_path);
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if abs_path.exists() {
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fs::remove_file(&abs_path)?;
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}
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}
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qs::delete_script(conn, script_id)?;
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Ok(())
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}
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// --- Helper functions ---
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fn script_kind_to_frontmatter(kind: &ScriptKind) -> String {
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match kind {
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ScriptKind::Macro => "macro".to_string(),
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ScriptKind::Utility => "utility".to_string(),
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ScriptKind::Transform => "transform".to_string(),
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}
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}
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fn validate_lua_blocks(content: &str) -> Result<(), String> {
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// Track block-level nesting for function/end, if/end, for/end, while/end, do/end
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let mut depth: i32 = 0;
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for line in content.lines() {
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let trimmed = line.trim();
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// Skip comments
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if trimmed.starts_with("--") {
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continue;
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}
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// Count block openers
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for word in trimmed.split_whitespace() {
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match word {
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"function" | "if" | "for" | "while" | "do" => depth += 1,
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"end" | "end," | "end;" => {
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depth -= 1;
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if depth < 0 {
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return Err("unexpected 'end' without matching block opener".to_string());
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}
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}
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_ => {}
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}
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}
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// Handle "then" on if lines (don't double-count)
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// Handle inline "function() ... end"
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}
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if depth > 0 {
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return Err(format!("{depth} unclosed block(s) — missing 'end'"));
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}
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Ok(())
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::db::queries::project::{insert_project, make_test_project};
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use crate::db::Database;
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use tempfile::TempDir;
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fn setup() -> (Database, TempDir) {
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let mut db = Database::open_in_memory().unwrap();
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db.migrate().unwrap();
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insert_project(db.conn(), &make_test_project("p1", "blog")).unwrap();
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let dir = TempDir::new().unwrap();
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(db, dir)
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}
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#[test]
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fn create_draft_script() {
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let (db, _dir) = setup();
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let s = create_script(db.conn(), "p1", "My Script", ScriptKind::Macro, "return 'hi'", None).unwrap();
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assert_eq!(s.title, "My Script");
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assert_eq!(s.slug, "my-script");
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assert_eq!(s.kind, ScriptKind::Macro);
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assert_eq!(s.status, ScriptStatus::Draft);
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assert_eq!(s.content, Some("return 'hi'".to_string()));
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assert_eq!(s.entrypoint, "render");
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assert!(s.file_path.is_empty());
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assert!(s.enabled);
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}
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#[test]
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fn create_with_custom_entrypoint() {
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let (db, _dir) = setup();
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let s = create_script(db.conn(), "p1", "Util", ScriptKind::Utility, "", Some("main")).unwrap();
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assert_eq!(s.entrypoint, "main");
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}
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#[test]
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fn create_deduplicates_slug() {
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let (db, _dir) = setup();
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let s1 = create_script(db.conn(), "p1", "Test", ScriptKind::Macro, "", None).unwrap();
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let s2 = create_script(db.conn(), "p1", "Test", ScriptKind::Macro, "", None).unwrap();
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assert_eq!(s1.slug, "test");
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assert_eq!(s2.slug, "test-2");
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}
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#[test]
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fn update_script_bumps_version() {
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let (db, _dir) = setup();
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let s = create_script(db.conn(), "p1", "S", ScriptKind::Macro, "old", None).unwrap();
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let updated = update_script(db.conn(), &s.id, "p1", Some("New"), None, None, None, None, Some("new")).unwrap();
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assert_eq!(updated.title, "New");
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assert_eq!(updated.content, Some("new".to_string()));
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assert_eq!(updated.version, 2);
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}
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#[test]
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fn save_script_updates_content() {
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let (db, _dir) = setup();
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let s = create_script(db.conn(), "p1", "S", ScriptKind::Macro, "old", None).unwrap();
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let saved = save_script(db.conn(), &s.id, "new body").unwrap();
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assert_eq!(saved.content, Some("new body".to_string()));
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assert_eq!(saved.version, 2);
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}
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#[test]
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fn publish_and_unpublish_script() {
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let (db, dir) = setup();
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let s = create_script(db.conn(), "p1", "Pub", ScriptKind::Macro, "function render()\n return 'hi'\nend", None).unwrap();
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let published = publish_script(db.conn(), dir.path(), &s.id).unwrap();
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assert_eq!(published.status, ScriptStatus::Published);
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assert!(published.content.is_none());
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assert_eq!(published.file_path, "scripts/pub.lua");
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assert!(dir.path().join("scripts/pub.lua").exists());
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let unpublished = unpublish_script(db.conn(), dir.path(), &published.id).unwrap();
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assert_eq!(unpublished.status, ScriptStatus::Draft);
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assert!(unpublished.content.is_some());
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}
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#[test]
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fn delete_script_removes_file() {
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let (db, dir) = setup();
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let s = create_script(db.conn(), "p1", "Del", ScriptKind::Macro, "function render()\nend", None).unwrap();
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publish_script(db.conn(), dir.path(), &s.id).unwrap();
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assert!(dir.path().join("scripts/del.lua").exists());
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delete_script(db.conn(), dir.path(), &s.id).unwrap();
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assert!(!dir.path().join("scripts/del.lua").exists());
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assert!(qs::get_script_by_id(db.conn(), &s.id).is_err());
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}
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#[test]
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fn discover_entrypoints_finds_functions() {
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let code = "function render()\n return 'hi'\nend\n\nfunction helper(x)\n return x\nend";
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let funcs = discover_entrypoints(code);
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assert_eq!(funcs, vec!["render", "helper"]);
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}
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#[test]
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fn discover_entrypoints_main_first() {
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let code = "function helper()\nend\n\nfunction main()\nend";
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let funcs = discover_entrypoints(code);
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assert_eq!(funcs[0], "main");
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}
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#[test]
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fn validate_valid_lua() {
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assert!(validate_script_syntax("function render()\n return 'hi'\nend").is_ok());
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}
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#[test]
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fn validate_unclosed_function() {
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assert!(validate_script_syntax("function render()\n return 'hi'").is_err());
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}
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#[test]
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fn validate_extra_end() {
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assert!(validate_script_syntax("end").is_err());
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}
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}
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