Files
RuDS/crates/bds-core/src/engine/chat_tools.rs

979 lines
36 KiB
Rust

use std::collections::{BTreeMap, BTreeSet};
use std::fs;
use std::path::Path;
use base64::Engine as _;
use diesel::prelude::*;
use serde_json::{Value, json};
use crate::db::DbConnection as Connection;
use crate::db::queries::{media, post, post_link, post_media, script, template};
use crate::db::schema::ai_models;
use crate::engine::{EngineError, EngineResult, chat_surfaces};
use crate::util::frontmatter::read_post_file;
pub fn model_supports_tools(conn: &Connection, model: &str) -> EngineResult<bool> {
let catalog_value = conn.with(|connection| {
ai_models::table
.filter(ai_models::model_id.eq(model))
.select(ai_models::tool_call)
.first::<i32>(connection)
.optional()
})?;
Ok(catalog_value.map_or_else(
|| {
let model = model.to_ascii_lowercase();
model.contains("gpt")
|| model.contains("claude")
|| model.contains("tool")
|| model.contains("qwen")
|| model.contains("mistral")
},
|value| value != 0,
))
}
pub fn system_prompt(conn: &Connection, project_id: &str) -> EngineResult<String> {
let posts = post::list_posts_by_project(conn, project_id)?;
let media_count = media::count_media_by_project(conn, project_id)?;
let tags = posts
.iter()
.flat_map(|post| post.tags.iter())
.collect::<BTreeSet<_>>()
.len();
let categories = posts
.iter()
.flat_map(|post| post.categories.iter())
.collect::<BTreeSet<_>>()
.len();
let configured = crate::engine::settings::get(conn, "ai.system_prompt")?.unwrap_or_default();
let contract = format!(
"You are the conversational assistant for this blog project. Use tools when facts from the project are needed. Never invent project content or identifiers. There are {} posts, {media_count} media items, {tags} tags, and {categories} categories. Keep answers concise and use GitHub-flavored Markdown when useful. Use render tools for structured data, comparisons, and forms; their payloads are native UI data, never HTML or JavaScript.",
posts.len()
);
Ok(if configured.trim().is_empty() {
contract
} else {
format!("{}\n\n{contract}", configured.trim())
})
}
pub fn tool_specs() -> Vec<Value> {
vec![
spec(
"get_blog_stats",
"Return aggregate project statistics.",
json!({}),
),
spec(
"check_term",
"Check whether a term is used as a tag or category.",
json!({"term": {"type": "string"}}),
),
spec(
"search_posts",
"Search post titles, slugs, excerpts, bodies, tags, and categories.",
json!({"query": {"type": "string"}, "language": {"type": "string"}, "limit": {"type": "integer"}}),
),
spec(
"read_post",
"Read one post by id.",
json!({"post_id": {"type": "string"}}),
),
spec(
"read_post_by_slug",
"Read one post by slug.",
json!({"slug": {"type": "string"}}),
),
spec(
"list_posts",
"List posts, optionally filtering by status, tag, or category.",
json!({"status": {"type": "string"}, "tag": {"type": "string"}, "category": {"type": "string"}, "limit": {"type": "integer"}}),
),
spec(
"count_posts",
"Count posts and optionally group by status, tag, or category.",
json!({"group_by": {"type": "string", "enum": ["status", "tag", "category"]}}),
),
spec(
"update_post_metadata",
"Update title, excerpt, tags, or categories on a post.",
json!({"post_id": {"type": "string"}, "title": {"type": "string"}, "excerpt": {"type": ["string", "null"]}, "tags": {"type": "array", "items": {"type": "string"}}, "categories": {"type": "array", "items": {"type": "string"}}}),
),
spec(
"list_media",
"List project media.",
json!({"limit": {"type": "integer"}}),
),
spec(
"get_media",
"Get one media item.",
json!({"media_id": {"type": "string"}}),
),
spec(
"view_image",
"Return a local image thumbnail as a data URL for visual inspection.",
json!({"media_id": {"type": "string"}, "size": {"type": "string", "enum": ["small", "medium", "large"]}}),
),
spec(
"update_media_metadata",
"Update title, alt text, caption, or tags on media.",
json!({"media_id": {"type": "string"}, "title": {"type": ["string", "null"]}, "alt": {"type": ["string", "null"]}, "caption": {"type": ["string", "null"]}, "tags": {"type": "array", "items": {"type": "string"}}}),
),
spec("list_tags", "List tags and usage counts.", json!({})),
spec(
"list_categories",
"List categories and usage counts.",
json!({}),
),
spec(
"get_post_backlinks",
"Get posts that link to a post.",
json!({"post_id": {"type": "string"}}),
),
spec(
"get_post_outlinks",
"Get posts linked from a post.",
json!({"post_id": {"type": "string"}}),
),
spec(
"get_post_media",
"Get media linked to a post.",
json!({"post_id": {"type": "string"}}),
),
spec(
"get_media_posts",
"Get posts that use a media item.",
json!({"media_id": {"type": "string"}}),
),
spec("list_templates", "List templates.", json!({})),
spec(
"read_template",
"Read a template by id.",
json!({"template_id": {"type": "string"}}),
),
spec("list_scripts", "List scripts.", json!({})),
spec(
"read_script",
"Read a script by id.",
json!({"script_id": {"type": "string"}}),
),
spec(
"navigate",
"Open a project area or entity in the application.",
json!({
"action": {"type": "string", "enum": ["open_post", "open_media", "open_settings", "open_chat", "switch_view", "toggle_sidebar", "toggle_panel", "toggle_assistant_sidebar"]},
"destination": {"type": "string", "enum": ["posts", "pages", "media", "templates", "scripts", "tags", "chat", "import", "git", "settings"]},
"entity_id": {"type": "string"},
"value": {"type": "string"}
}),
),
spec(
"render_card",
"Render an information card with optional allow-listed actions.",
json!({
"title": {"type": "string"}, "subtitle": {"type": "string"}, "body": {"type": "string"},
"actions": {"type": "array", "items": {"type": "object", "properties": {
"label": {"type": "string"}, "action": {"type": "string"}, "payload": {"type": "object"}
}, "required": ["label", "action"]}}
}),
),
spec(
"render_chart",
"Render a native chart; heatmap and stacked-bar series use labelled segments.",
json!({
"chartType": {"type": "string", "enum": ["bar", "stacked-bar", "line", "area", "pie", "donut", "heatmap"]},
"chart_type": {"type": "string", "enum": ["bar", "stacked-bar", "line", "area", "pie", "donut", "heatmap"]},
"title": {"type": "string"},
"series": {"type": "array", "items": {"type": "object", "properties": {
"label": {"type": "string"}, "value": {"type": "number"},
"segments": {"type": "array", "items": {"type": "object", "properties": {
"label": {"type": "string"}, "value": {"type": "number"}
}, "required": ["label", "value"]}}
}, "required": ["label"]}}
}),
),
spec(
"render_form",
"Render a native form that submits its current values with an allow-listed action.",
json!({
"title": {"type": "string"},
"fields": {"type": "array", "items": {"type": "object", "properties": {
"key": {"type": "string"}, "label": {"type": "string"},
"inputType": {"type": "string", "enum": ["text", "textarea", "select", "checkbox", "date", "number"]},
"input_type": {"type": "string", "enum": ["text", "textarea", "select", "checkbox", "date", "number"]},
"placeholder": {"type": "string"}, "defaultValue": {}, "default_value": {}, "required": {"type": "boolean"},
"options": {"type": "array", "items": {"type": "object", "properties": {
"label": {"type": "string"}, "value": {"type": "string"}
}}}
}, "required": ["key", "label", "inputType"]}},
"submitLabel": {"type": "string"}, "submit_label": {"type": "string"},
"submitAction": {"type": "string"}, "submit_action": {"type": "string"}
}),
),
spec(
"render_list",
"Render a native list.",
json!({"title": {"type": "string"}, "items": {"type": "array", "items": {"type": "string"}}}),
),
spec(
"render_metric",
"Render a prominent metric.",
json!({"label": {"type": "string"}, "value": {"type": "string"}}),
),
spec(
"render_mindmap",
"Render a native hierarchical mind map.",
json!({"title": {"type": "string"}, "nodes": {"type": "array", "items": {"type": "object", "properties": {
"id": {"type": "string"}, "label": {"type": "string"}, "children": {"type": "array", "items": {"type": "string"}}
}, "required": ["label"]}}}),
),
spec(
"render_table",
"Render a native data table.",
json!({
"title": {"type": "string"}, "columns": {"type": "array", "items": {"type": "string"}},
"rows": {"type": "array", "items": {"type": "array", "items": {"type": "string"}}}
}),
),
spec(
"render_tabs",
"Render switchable tabs containing nested native surfaces or text.",
json!({"title": {"type": "string"}, "tabs": {"type": "array", "items": {"type": "object", "properties": {
"label": {"type": "string"}, "content": {"type": "array", "items": {"type": "object"}}
}, "required": ["label", "content"]}}}),
),
]
}
pub fn execute(
conn: &Connection,
data_dir: &Path,
project_id: &str,
name: &str,
arguments: &Value,
) -> EngineResult<Value> {
match name {
"blog_stats" | "get_blog_stats" => blog_stats(conn, project_id),
"check_term" => check_term(conn, project_id, required_str(arguments, "term")?),
"search_posts" => search_posts(conn, project_id, arguments),
"read_post" => {
let item = post::get_post_by_id(conn, required_id(arguments, "post_id", "postId")?)?;
ensure_project(&item.project_id, project_id)?;
post_detail(data_dir, item)
}
"read_post_by_slug" => {
let item = post::get_post_by_project_and_slug(
conn,
project_id,
required_str(arguments, "slug")?,
)?;
post_detail(data_dir, item)
}
"list_posts" => list_posts(conn, project_id, arguments),
"count_posts" => count_posts(conn, project_id, arguments),
"update_post_metadata" => update_post_metadata(conn, data_dir, project_id, arguments),
"list_media" => list_media(conn, project_id, arguments),
"get_media" => {
let item =
media::get_media_by_id(conn, required_id(arguments, "media_id", "mediaId")?)?;
ensure_project(&item.project_id, project_id)?;
Ok(json!({"success": true, "media": item}))
}
"view_image" => view_image(conn, data_dir, project_id, arguments),
"update_media_metadata" => update_media_metadata(conn, data_dir, project_id, arguments),
"list_tags" => counted_terms(conn, project_id, true),
"list_categories" => counted_terms(conn, project_id, false),
"get_post_backlinks" => post_links(conn, project_id, arguments, true),
"get_post_outlinks" => post_links(conn, project_id, arguments, false),
"get_post_media" => linked_media(conn, project_id, arguments),
"get_media_posts" => linked_posts(conn, project_id, arguments),
"list_templates" => Ok(json!({
"templates": template::list_templates_by_project(conn, project_id)?,
})),
"read_template" => {
let item = template::get_template_by_id(
conn,
required_id(arguments, "template_id", "templateId")?,
)?;
ensure_project(&item.project_id, project_id)?;
Ok(json!({"success": true, "template": item}))
}
"list_scripts" => Ok(json!({
"scripts": script::list_scripts_by_project(conn, project_id)?,
})),
"read_script" => {
let item =
script::get_script_by_id(conn, required_id(arguments, "script_id", "scriptId")?)?;
ensure_project(&item.project_id, project_id)?;
Ok(json!({"success": true, "script": item}))
}
"navigate" => navigate(arguments),
name if chat_surfaces::RENDER_TOOL_NAMES.contains(&name) => {
Ok(chat_surfaces::render_tool_result(name, arguments)
.expect("render tool allow-list and result builder must stay in sync"))
}
_ => Ok(json!({"success": false, "error": "unknown_tool", "name": name})),
}
}
fn blog_stats(conn: &Connection, project_id: &str) -> EngineResult<Value> {
let posts = post::list_posts_by_project(conn, project_id)?;
let media_count = media::count_media_by_project(conn, project_id)?;
let templates = template::list_templates_by_project(conn, project_id)?.len();
let scripts = script::list_scripts_by_project(conn, project_id)?.len();
let tags = posts
.iter()
.flat_map(|item| &item.tags)
.collect::<BTreeSet<_>>()
.len();
let categories = posts
.iter()
.flat_map(|item| &item.categories)
.collect::<BTreeSet<_>>()
.len();
Ok(json!({
"posts": posts.len(), "media": media_count, "templates": templates,
"scripts": scripts, "tags": tags, "categories": categories,
}))
}
fn check_term(conn: &Connection, project_id: &str, term: &str) -> EngineResult<Value> {
let term = term.to_lowercase();
let posts = post::list_posts_by_project(conn, project_id)?;
let tag_count = posts
.iter()
.filter(|item| item.tags.iter().any(|value| value.to_lowercase() == term))
.count();
let category_count = posts
.iter()
.filter(|item| {
item.categories
.iter()
.any(|value| value.to_lowercase() == term)
})
.count();
Ok(json!({"term": term, "tag_posts": tag_count, "category_posts": category_count}))
}
fn search_posts(conn: &Connection, project_id: &str, arguments: &Value) -> EngineResult<Value> {
let query = required_str(arguments, "query")?;
let language = arguments
.get("language")
.and_then(Value::as_str)
.unwrap_or("en");
let limit = limit(arguments);
let mut matches = Vec::new();
for id in crate::db::fts::search_posts(conn, query, language)? {
if let Ok(item) = post::get_post_by_id(conn, &id)
&& item.project_id == project_id
{
matches.push(post_summary(&item));
if matches.len() == limit {
break;
}
}
}
Ok(json!({"posts": matches, "count": matches.len()}))
}
fn list_posts(conn: &Connection, project_id: &str, arguments: &Value) -> EngineResult<Value> {
let status = arguments.get("status").and_then(Value::as_str);
let tag = arguments.get("tag").and_then(Value::as_str);
let category = arguments.get("category").and_then(Value::as_str);
let items = post::list_posts_by_project(conn, project_id)?
.into_iter()
.filter(|item| status.is_none_or(|value| item.status.as_str() == value))
.filter(|item| tag.is_none_or(|value| contains_case_insensitive(&item.tags, value)))
.filter(|item| {
category.is_none_or(|value| contains_case_insensitive(&item.categories, value))
})
.take(limit(arguments))
.map(|item| post_summary(&item))
.collect::<Vec<_>>();
Ok(json!({"posts": items, "count": items.len()}))
}
fn count_posts(conn: &Connection, project_id: &str, arguments: &Value) -> EngineResult<Value> {
let items = post::list_posts_by_project(conn, project_id)?;
let Some(group_by) = arguments
.get("group_by")
.or_else(|| arguments.get("groupBy"))
.and_then(Value::as_str)
else {
return Ok(json!({"total_posts": items.len()}));
};
let mut groups = BTreeMap::<String, usize>::new();
for item in &items {
let values: Vec<String> = match group_by {
"status" => vec![item.status.as_str().to_string()],
"tag" => item.tags.clone(),
"category" => item.categories.clone(),
_ => {
return Err(EngineError::Validation(format!(
"unsupported post grouping: {group_by}"
)));
}
};
for value in values {
*groups.entry(value).or_default() += 1;
}
}
Ok(json!({"total_posts": items.len(), "group_by": group_by, "groups": groups}))
}
fn update_post_metadata(
conn: &Connection,
data_dir: &Path,
project_id: &str,
arguments: &Value,
) -> EngineResult<Value> {
let id = required_id(arguments, "post_id", "postId")?;
let existing = post::get_post_by_id(conn, id)?;
ensure_project(&existing.project_id, project_id)?;
if !["title", "excerpt", "tags", "categories"]
.iter()
.any(|key| arguments.get(key).is_some())
{
return Err(EngineError::Validation(
"no post metadata updates provided".to_string(),
));
}
let excerpt = optional_nullable_str(arguments, "excerpt")?;
let item = crate::engine::post::update_post(
conn,
data_dir,
id,
arguments.get("title").and_then(Value::as_str),
None,
excerpt,
None,
optional_string_array(arguments, "tags")?,
optional_string_array(arguments, "categories")?,
None,
None,
None,
None,
)?;
Ok(json!({"success": true, "post": post_summary(&item)}))
}
fn list_media(conn: &Connection, project_id: &str, arguments: &Value) -> EngineResult<Value> {
let items = media::list_media_by_project(conn, project_id)?
.into_iter()
.take(limit(arguments))
.collect::<Vec<_>>();
Ok(json!({"media": items, "count": items.len()}))
}
fn update_media_metadata(
conn: &Connection,
data_dir: &Path,
project_id: &str,
arguments: &Value,
) -> EngineResult<Value> {
let id = required_id(arguments, "media_id", "mediaId")?;
let existing = media::get_media_by_id(conn, id)?;
ensure_project(&existing.project_id, project_id)?;
if !["title", "alt", "caption", "tags"]
.iter()
.any(|key| arguments.get(key).is_some())
{
return Err(EngineError::Validation(
"no media metadata updates provided".to_string(),
));
}
let item = crate::engine::media::update_media(
conn,
data_dir,
id,
optional_nullable_str(arguments, "title")?,
optional_nullable_str(arguments, "alt")?,
optional_nullable_str(arguments, "caption")?,
None,
None,
optional_string_array(arguments, "tags")?,
)?;
Ok(json!({"success": true, "media": item}))
}
fn view_image(
conn: &Connection,
data_dir: &Path,
project_id: &str,
arguments: &Value,
) -> EngineResult<Value> {
let item = media::get_media_by_id(conn, required_id(arguments, "media_id", "mediaId")?)?;
ensure_project(&item.project_id, project_id)?;
if !item.mime_type.starts_with("image/") {
return Ok(json!({"success": false, "error": "not_image", "mime_type": item.mime_type}));
}
let size = arguments
.get("size")
.and_then(Value::as_str)
.unwrap_or("medium");
if !["small", "medium", "large"].contains(&size) {
return Err(EngineError::Validation(format!(
"unsupported thumbnail size: {size}"
)));
}
let path = data_dir.join(crate::util::thumbnail_path(&item.id, size, "webp"));
if !path.is_file() {
return Ok(json!({"success": false, "error": "thumbnail_not_available"}));
}
let encoded = base64::engine::general_purpose::STANDARD.encode(fs::read(path)?);
Ok(json!({
"success": true,
"media": item,
"data_url": format!("data:image/webp;base64,{encoded}"),
}))
}
fn post_links(
conn: &Connection,
project_id: &str,
arguments: &Value,
incoming: bool,
) -> EngineResult<Value> {
let id = required_id(arguments, "post_id", "postId")?;
let source = post::get_post_by_id(conn, id)?;
ensure_project(&source.project_id, project_id)?;
let links = if incoming {
post_link::list_links_by_target(conn, id)?
} else {
post_link::list_links_by_source(conn, id)?
};
let mut items = Vec::with_capacity(links.len());
for link in links {
let linked_id = if incoming {
&link.source_post_id
} else {
&link.target_post_id
};
let linked = post::get_post_by_id(conn, linked_id)?;
ensure_project(&linked.project_id, project_id)?;
items.push(json!({
"post": post_summary(&linked),
"link_text": link.link_text,
}));
}
if incoming {
Ok(json!({"success": true, "post_id": id, "linked_by": items}))
} else {
Ok(json!({"success": true, "post_id": id, "links_to": items}))
}
}
fn linked_media(conn: &Connection, project_id: &str, arguments: &Value) -> EngineResult<Value> {
let id = required_id(arguments, "post_id", "postId")?;
let item = post::get_post_by_id(conn, id)?;
ensure_project(&item.project_id, project_id)?;
let mut items = Vec::new();
for link in post_media::list_post_media_by_post(conn, id)? {
ensure_project(&link.project_id, project_id)?;
let item = media::get_media_by_id(conn, &link.media_id)?;
ensure_project(&item.project_id, project_id)?;
items.push(json!({"media": item, "sort_order": link.sort_order}));
}
Ok(json!({"success": true, "post_id": id, "media": items}))
}
fn linked_posts(conn: &Connection, project_id: &str, arguments: &Value) -> EngineResult<Value> {
let id = required_id(arguments, "media_id", "mediaId")?;
let item = media::get_media_by_id(conn, id)?;
ensure_project(&item.project_id, project_id)?;
let mut items = Vec::new();
for link in post_media::list_post_media_by_media(conn, id)? {
ensure_project(&link.project_id, project_id)?;
let item = post::get_post_by_id(conn, &link.post_id)?;
ensure_project(&item.project_id, project_id)?;
items.push(json!({"post": post_summary(&item), "sort_order": link.sort_order}));
}
Ok(json!({"success": true, "media_id": id, "posts": items}))
}
fn counted_terms(conn: &Connection, project_id: &str, tags: bool) -> EngineResult<Value> {
let mut counts = BTreeMap::<String, usize>::new();
for item in post::list_posts_by_project(conn, project_id)? {
for term in if tags { &item.tags } else { &item.categories } {
*counts.entry(term.clone()).or_default() += 1;
}
}
let values = counts
.into_iter()
.map(|(name, count)| json!({"name": name, "count": count}))
.collect::<Vec<_>>();
Ok(if tags {
json!({"tags": values, "count": values.len()})
} else {
json!({"categories": values, "count": values.len()})
})
}
fn navigate(arguments: &Value) -> EngineResult<Value> {
let action = arguments.get("action").and_then(Value::as_str);
let value = arguments
.get("value")
.or_else(|| arguments.get("entity_id"))
.or_else(|| arguments.get("entityId"))
.and_then(Value::as_str);
let (destination, entity_id) = match action {
Some("open_post" | "openPost") => ("posts", required_navigation_value(value, "post")?),
Some("open_media" | "openMedia") => ("media", required_navigation_value(value, "media")?),
Some("open_chat" | "openChat") => ("chat", required_navigation_value(value, "chat")?),
Some("open_settings" | "openSettings") => ("settings", None),
Some("switch_view" | "switchView") => {
(required_navigation_value(value, "view")?.unwrap(), None)
}
Some("toggle_sidebar" | "toggleSidebar") => ("toggle_sidebar", None),
Some("toggle_panel" | "togglePanel") => ("toggle_panel", None),
Some("toggle_assistant_sidebar" | "toggleAssistantSidebar") => {
("toggle_assistant_sidebar", None)
}
Some(action) => {
return Err(EngineError::Validation(format!(
"unsupported navigation action: {action}"
)));
}
None => (required_str(arguments, "destination")?, value),
};
if ![
"posts",
"pages",
"media",
"templates",
"scripts",
"tags",
"chat",
"import",
"git",
"settings",
"toggle_sidebar",
"toggle_panel",
"toggle_assistant_sidebar",
]
.contains(&destination)
{
return Err(EngineError::Validation(format!(
"unsupported navigation destination: {destination}"
)));
}
Ok(json!({
"success": true,
"navigation": {
"destination": destination,
"entity_id": entity_id,
}
}))
}
fn post_detail(data_dir: &Path, item: crate::model::Post) -> EngineResult<Value> {
let body = post_body(data_dir, &item)?;
Ok(json!({"success": true, "post": item, "body": body}))
}
fn post_body(data_dir: &Path, item: &crate::model::Post) -> EngineResult<String> {
if let Some(content) = item.content.as_deref() {
return Ok(content.to_string());
}
if item.file_path.is_empty() {
return Ok(String::new());
}
let raw = fs::read_to_string(data_dir.join(&item.file_path))?;
let (_, body) = read_post_file(&raw)
.map_err(|error| EngineError::Parse(format!("invalid post file: {error}")))?;
Ok(body)
}
fn post_summary(item: &crate::model::Post) -> Value {
json!({
"id": item.id, "title": item.title, "slug": item.slug,
"excerpt": item.excerpt, "status": item.status, "tags": item.tags,
"categories": item.categories, "created_at": item.created_at,
"updated_at": item.updated_at,
})
}
fn spec(name: &str, description: &str, properties: Value) -> Value {
let required = properties
.as_object()
.into_iter()
.flat_map(|values| values.iter())
.filter(|(_, schema)| !schema.get("type").is_some_and(Value::is_array))
.filter(|(name, _)| {
matches!(
name.as_str(),
"term"
| "query"
| "post_id"
| "slug"
| "media_id"
| "template_id"
| "script_id"
| "destination"
)
})
.map(|(name, _)| Value::String(name.clone()))
.collect::<Vec<_>>();
let required = if name == "navigate" {
Vec::new()
} else {
required
};
json!({
"type": "function",
"function": {
"name": name,
"description": description,
"parameters": {
"type": "object",
"properties": properties,
"required": required,
"additionalProperties": false,
}
}
})
}
fn required_navigation_value<'a>(
value: Option<&'a str>,
target: &str,
) -> EngineResult<Option<&'a str>> {
value
.filter(|value| !value.trim().is_empty())
.map(Some)
.ok_or_else(|| {
EngineError::Validation(format!("navigation {target} identifier is required"))
})
}
fn required_str<'a>(arguments: &'a Value, key: &str) -> EngineResult<&'a str> {
arguments
.get(key)
.and_then(Value::as_str)
.filter(|value| !value.trim().is_empty())
.ok_or_else(|| EngineError::Validation(format!("tool argument {key} is required")))
}
fn required_id<'a>(arguments: &'a Value, snake: &str, camel: &str) -> EngineResult<&'a str> {
arguments
.get(snake)
.or_else(|| arguments.get(camel))
.and_then(Value::as_str)
.filter(|value| !value.trim().is_empty())
.ok_or_else(|| EngineError::Validation(format!("tool argument {snake} is required")))
}
fn ensure_project(actual: &str, expected: &str) -> EngineResult<()> {
if actual == expected {
Ok(())
} else {
Err(EngineError::NotFound("project entity".to_string()))
}
}
fn limit(arguments: &Value) -> usize {
arguments
.get("limit")
.and_then(Value::as_u64)
.unwrap_or(25)
.clamp(1, 100) as usize
}
fn contains_case_insensitive(values: &[String], needle: &str) -> bool {
values
.iter()
.any(|value| value.eq_ignore_ascii_case(needle))
}
fn optional_string_array(arguments: &Value, key: &str) -> EngineResult<Option<Vec<String>>> {
let Some(value) = arguments.get(key) else {
return Ok(None);
};
let values = value
.as_array()
.ok_or_else(|| EngineError::Validation(format!("tool argument {key} must be an array")))?
.iter()
.map(|value| {
value.as_str().map(str::to_string).ok_or_else(|| {
EngineError::Validation(format!("tool argument {key} must contain strings"))
})
})
.collect::<EngineResult<Vec<_>>>()?;
Ok(Some(values))
}
fn optional_nullable_str<'a>(
arguments: &'a Value,
key: &str,
) -> EngineResult<Option<Option<&'a str>>> {
match arguments.get(key) {
None => Ok(None),
Some(Value::Null) => Ok(Some(None)),
Some(Value::String(value)) => Ok(Some(Some(value))),
Some(_) => Err(EngineError::Validation(format!(
"tool argument {key} must be a string or null"
))),
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::db::Database;
use crate::db::queries::media::{insert_media, make_test_media};
use crate::db::queries::post::{insert_post, make_test_post};
use crate::db::queries::post_link::insert_post_link;
use crate::db::queries::post_media::link_media;
use crate::db::queries::project::{insert_project, make_test_project};
use crate::model::{PostLink, PostMedia};
fn setup() -> Database {
let db = Database::open_in_memory().unwrap();
db.migrate().unwrap();
insert_project(db.conn(), &make_test_project("p1", "blog")).unwrap();
insert_post(db.conn(), &make_test_post("source", "p1", "source")).unwrap();
insert_post(db.conn(), &make_test_post("target", "p1", "target")).unwrap();
insert_media(db.conn(), &make_test_media("media1", "p1")).unwrap();
insert_post_link(
db.conn(),
&PostLink {
id: "link1".into(),
source_post_id: "source".into(),
target_post_id: "target".into(),
link_text: Some("read next".into()),
created_at: 1,
},
)
.unwrap();
link_media(
db.conn(),
&PostMedia {
id: "post-media1".into(),
project_id: "p1".into(),
post_id: "source".into(),
media_id: "media1".into(),
sort_order: 3,
created_at: 1,
},
)
.unwrap();
db
}
#[test]
fn relationship_tools_return_project_entities() {
let db = setup();
let dir = tempfile::tempdir().unwrap();
let outlinks = execute(
db.conn(),
dir.path(),
"p1",
"get_post_outlinks",
&json!({"post_id": "source"}),
)
.unwrap();
assert_eq!(outlinks["links_to"][0]["post"]["id"], "target");
assert_eq!(outlinks["links_to"][0]["link_text"], "read next");
let backlinks = execute(
db.conn(),
dir.path(),
"p1",
"get_post_backlinks",
&json!({"post_id": "target"}),
)
.unwrap();
assert_eq!(backlinks["linked_by"][0]["post"]["id"], "source");
let post_media = execute(
db.conn(),
dir.path(),
"p1",
"get_post_media",
&json!({"post_id": "source"}),
)
.unwrap();
assert_eq!(post_media["media"][0]["media"]["id"], "media1");
assert_eq!(post_media["media"][0]["sort_order"], 3);
let media_posts = execute(
db.conn(),
dir.path(),
"p1",
"get_media_posts",
&json!({"media_id": "media1"}),
)
.unwrap();
assert_eq!(media_posts["posts"][0]["post"]["id"], "source");
}
#[test]
fn view_image_is_bounded_to_generated_image_thumbnails() {
let db = setup();
let dir = tempfile::tempdir().unwrap();
let relative = crate::util::thumbnail_path("media1", "medium", "webp");
let path = dir.path().join(relative);
fs::create_dir_all(path.parent().unwrap()).unwrap();
fs::write(&path, b"thumbnail").unwrap();
let result = execute(
db.conn(),
dir.path(),
"p1",
"view_image",
&json!({"media_id": "media1", "size": "medium"}),
)
.unwrap();
assert_eq!(result["success"], true);
assert_eq!(result["data_url"], "data:image/webp;base64,dGh1bWJuYWls");
let invalid = execute(
db.conn(),
dir.path(),
"p1",
"view_image",
&json!({"media_id": "media1", "size": "original"}),
);
assert!(matches!(invalid, Err(EngineError::Validation(_))));
}
#[test]
fn structured_render_tools_are_advertised_and_return_inert_native_data() {
let specs = tool_specs();
let names = specs
.iter()
.filter_map(|spec| spec.pointer("/function/name").and_then(Value::as_str))
.collect::<BTreeSet<_>>();
for name in chat_surfaces::RENDER_TOOL_NAMES {
assert!(names.contains(name), "missing tool schema for {name}");
}
let chart = specs
.iter()
.find(|spec| {
spec.pointer("/function/name").and_then(Value::as_str) == Some("render_chart")
})
.unwrap();
assert!(
chart
.pointer("/function/parameters/properties/chartType")
.is_some()
);
assert!(
chart
.pointer("/function/parameters/properties/chart_type")
.is_some()
);
let db = setup();
let dir = tempfile::tempdir().unwrap();
let raw = json!({"title": "<script>alert(1)</script>", "body": "<b>data</b>"});
let result = execute(db.conn(), dir.path(), "p1", "render_card", &raw).unwrap();
assert_eq!(result["type"], "card");
assert_eq!(result["title"], raw["title"]);
assert_eq!(result["body"], raw["body"]);
assert!(result.get("html").is_none());
assert!(result.get("javascript").is_none());
}
}