use super::traits::{Tool, ToolResult};
use crate::memory::Memory;
use async_trait::async_trait;
use serde_json::json;
use std::fmt::Write;
use std::sync::Arc;
pub struct DiscordSearchTool {
discord_memory: Arc<dyn Memory>,
}
impl DiscordSearchTool {
pub fn new(discord_memory: Arc<dyn Memory>) -> Self {
Self { discord_memory }
}
}
#[async_trait]
impl Tool for DiscordSearchTool {
fn name(&self) -> &str {
"discord_search"
}
fn description(&self) -> &str {
"Search Discord message history. Returns messages matching a keyword query, optionally filtered by channel_id, author_id, or time range."
}
fn parameters_schema(&self) -> serde_json::Value {
json!({
"type": "object",
"properties": {
"query": {
"type": "string",
"description": "Keywords or phrase to search for in Discord messages (optional if since/until provided)"
},
"limit": {
"type": "integer",
"description": "Max results to return (default: 10)"
},
"channel_id": {
"type": "string",
"description": "Filter results to a specific Discord channel ID"
},
"since": {
"type": "string",
"description": "Filter messages at or after this time (RFC 3339, e.g. 2025-03-01T00:00:00Z)"
},
"until": {
"type": "string",
"description": "Filter messages at or before this time (RFC 3339)"
}
}
})
}
async fn execute(&self, args: serde_json::Value) -> anyhow::Result<ToolResult> {
let query = args.get("query").and_then(|v| v.as_str()).unwrap_or("");
let channel_id = args.get("channel_id").and_then(|v| v.as_str());
let since = args.get("since").and_then(|v| v.as_str());
let until = args.get("until").and_then(|v| v.as_str());
if query.trim().is_empty() && since.is_none() && until.is_none() {
return Ok(ToolResult {
success: false,
output: String::new(),
error: Some(
"Provide at least 'query' (keywords) or time range ('since'/'until')".into(),
),
});
}
if let Some(s) = since {
if chrono::DateTime::parse_from_rfc3339(s).is_err() {
return Ok(ToolResult {
success: false,
output: String::new(),
error: Some(format!(
"Invalid 'since' date: {s}. Expected RFC 3339, e.g. 2025-03-01T00:00:00Z"
)),
});
}
}
if let Some(u) = until {
if chrono::DateTime::parse_from_rfc3339(u).is_err() {
return Ok(ToolResult {
success: false,
output: String::new(),
error: Some(format!(
"Invalid 'until' date: {u}. Expected RFC 3339, e.g. 2025-03-01T00:00:00Z"
)),
});
}
}
if let (Some(s), Some(u)) = (since, until) {
if let (Ok(s_dt), Ok(u_dt)) = (
chrono::DateTime::parse_from_rfc3339(s),
chrono::DateTime::parse_from_rfc3339(u),
) {
if s_dt >= u_dt {
return Ok(ToolResult {
success: false,
output: String::new(),
error: Some("'since' must be before 'until'".into()),
});
}
}
}
#[allow(clippy::cast_possible_truncation)]
let limit = args
.get("limit")
.and_then(serde_json::Value::as_u64)
.map_or(10, |v| v as usize);
match self
.discord_memory
.recall(query, limit, channel_id, since, until)
.await
{
Ok(entries) if entries.is_empty() => Ok(ToolResult {
success: true,
output: "No Discord messages found.".into(),
error: None,
}),
Ok(entries) => {
let mut output = format!("Found {} Discord messages:\n", entries.len());
for entry in &entries {
let score = entry
.score
.map_or_else(String::new, |s| format!(" [{s:.0}%]"));
let _ = writeln!(output, "- {}{score}", entry.content);
}
Ok(ToolResult {
success: true,
output,
error: None,
})
}
Err(e) => Ok(ToolResult {
success: false,
output: String::new(),
error: Some(format!("Discord search failed: {e}")),
}),
}
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::memory::NoneMemory;
fn noop_mem() -> Arc<dyn Memory> {
Arc::new(NoneMemory::new())
}
#[tokio::test]
async fn search_empty() {
let tool = DiscordSearchTool::new(noop_mem());
let result = tool.execute(json!({"query": "hello"})).await.unwrap();
assert!(result.success);
assert!(result.output.contains("No Discord messages found"));
}
#[tokio::test]
async fn search_requires_query_or_time() {
let tool = DiscordSearchTool::new(noop_mem());
let result = tool.execute(json!({})).await.unwrap();
assert!(!result.success);
assert!(result.error.as_ref().unwrap().contains("at least"));
}
#[test]
fn name_and_schema() {
let tool = DiscordSearchTool::new(noop_mem());
assert_eq!(tool.name(), "discord_search");
assert!(tool.parameters_schema()["properties"]["query"].is_object());
}
}