use anyhow::Result;
use chrono::{Duration, Local, Utc};
use serde_json::{Value, json};
use std::collections::HashMap;
use crate::executors::types::{Skill, SkillParameter};
#[derive(Debug)]
pub struct DateTimeSkill;
#[async_trait::async_trait]
impl Skill for DateTimeSkill {
fn name(&self) -> &str {
"datetime"
}
fn description(&self) -> &str {
"Get current date and time, or perform timezone conversions"
}
fn usage_hint(&self) -> &str {
"Use this skill when the user asks for the current time, date, timestamp, or wants to convert between timezones"
}
fn parameters(&self) -> Vec<SkillParameter> {
vec![
SkillParameter {
name: "operation".to_string(),
param_type: "string".to_string(),
description: "Operation type: now, utc, timestamp, or convert".to_string(),
required: false,
default: Some(Value::String("now".to_string())),
example: Some(Value::String("now".to_string())),
enum_values: Some(vec![
"now".to_string(),
"utc".to_string(),
"timestamp".to_string(),
"convert".to_string(),
]),
},
SkillParameter {
name: "timezone".to_string(),
param_type: "string".to_string(),
description: "Timezone like 'Asia/Shanghai', 'America/New_York', 'UTC' (for convert operation)".to_string(),
required: false,
default: None,
example: Some(Value::String("Asia/Shanghai".to_string())),
enum_values: None,
},
SkillParameter {
name: "format".to_string(),
param_type: "string".to_string(),
description: "Output format like '%Y-%m-%d %H:%M:%S'".to_string(),
required: false,
default: Some(Value::String("%Y-%m-%d %H:%M:%S".to_string())),
example: Some(Value::String("%Y-%m-%d %H:%M:%S".to_string())),
enum_values: None,
},
]
}
fn example_call(&self) -> Value {
json!({
"action": "datetime",
"parameters": {
"operation": "now"
}
})
}
fn example_output(&self) -> String {
"2024-01-15 14:30:25".to_string()
}
fn category(&self) -> &str {
"time"
}
async fn execute(&self, parameters: &HashMap<String, Value>) -> Result<String> {
let operation = parameters
.get("operation")
.and_then(|v| v.as_str())
.unwrap_or("now");
let timezone = parameters.get("timezone").and_then(|v| v.as_str());
let format_str = parameters
.get("format")
.and_then(|v| v.as_str())
.unwrap_or("%Y-%m-%d %H:%M:%S");
match operation {
"utc" => {
let now = Utc::now();
Ok(now.format(format_str).to_string())
}
"timestamp" => {
let now = Utc::now();
Ok(now.timestamp().to_string())
}
"convert" => {
if let Some(tz) = timezone {
convert_timezone(tz, format_str)
} else {
Ok("Missing timezone for conversion".to_string())
}
}
_ => {
let now = Local::now();
Ok(now.format(format_str).to_string())
}
}
}
fn validate(&self, _parameters: &HashMap<String, Value>) -> Result<()> {
Ok(())
}
}
fn convert_timezone(timezone: &str, format_str: &str) -> Result<String> {
let offset = match timezone.to_lowercase().as_str() {
"utc" | "gmt" => 0,
"asia/shanghai" | "asia/beijing" | "cst" => 8,
"asia/tokyo" | "jst" => 9,
"america/new_york" | "est" => -5,
"america/los_angeles" | "pst" => -8,
"europe/london" | "bst" | "gmt" => 0,
"europe/paris" | "cet" => 1,
"asia/dubai" | "gst" => 4,
"asia/singapore" | "sgt" => 8,
"australia/sydney" | "aest" => 11,
_ => {
if let Some(offset_val) = parse_offset(timezone) {
offset_val
} else {
return Ok(format!("Unknown timezone: {}", timezone));
}
}
};
let now = Utc::now();
let dt = now + Duration::hours(offset.into());
Ok(dt.format(format_str).to_string())
}
fn parse_offset(tz: &str) -> Option<i32> {
let tz_lower = tz.to_lowercase();
if tz_lower.starts_with("utc") || tz_lower.starts_with("gmt") {
let rest = &tz_lower[3..];
if let Ok(offset) = rest.parse::<i32>() {
return Some(offset);
}
if rest.starts_with('+') {
if let Ok(offset) = rest[1..].parse::<i32>() {
return Some(offset);
}
}
if rest.starts_with('-') {
if let Ok(offset) = rest[1..].parse::<i32>() {
return Some(-offset);
}
}
}
None
}