//! Tests for chrono datetime elicitation.

#![cfg(feature = "chrono")]

use chrono::{DateTime, FixedOffset, NaiveDateTime, Utc};
use elicitation::{Elicitation, Prompt};

// Compile-time trait bound checks
#[test]
fn test_datetime_utc_implements_elicitation() {
    fn assert_elicitation<T: Elicitation>() {}
    assert_elicitation::<DateTime<Utc>>();
}

#[test]
fn test_datetime_fixed_offset_implements_elicitation() {
    fn assert_elicitation<T: Elicitation>() {}
    assert_elicitation::<DateTime<FixedOffset>>();
}

#[test]
fn test_naive_datetime_implements_elicitation() {
    fn assert_elicitation<T: Elicitation>() {}
    assert_elicitation::<NaiveDateTime>();
}

#[test]
fn test_datetime_utc_has_prompt() {
    assert!(DateTime::<Utc>::prompt().is_some());
}

#[test]
fn test_datetime_fixed_offset_has_prompt() {
    assert!(DateTime::<FixedOffset>::prompt().is_some());
}

#[test]
fn test_naive_datetime_has_prompt() {
    assert!(NaiveDateTime::prompt().is_some());
}

// Integration tests (require MCP client)
#[tokio::test]
#[ignore = "Requires MCP client connection"]
async fn test_elicit_datetime_utc_iso() {
    // Test ISO 8601 input: "2024-07-11T15:30:00Z"
}

#[tokio::test]
#[ignore = "Requires MCP client connection"]
async fn test_elicit_datetime_utc_components() {
    // Test manual components: year=2024, month=7, day=11, etc.
}

#[tokio::test]
#[ignore = "Requires MCP client connection"]
async fn test_elicit_datetime_fixed_offset_iso() {
    // Test ISO 8601 with offset: "2024-07-11T15:30:00+05:00"
}

#[tokio::test]
#[ignore = "Requires MCP client connection"]
async fn test_elicit_datetime_fixed_offset_components() {
    // Test manual components with offset
}

#[tokio::test]
#[ignore = "Requires MCP client connection"]
async fn test_elicit_naive_datetime_iso() {
    // Test ISO 8601 no timezone: "2024-07-11T15:30:00"
}

#[tokio::test]
#[ignore = "Requires MCP client connection"]
async fn test_elicit_naive_datetime_components() {
    // Test manual components
}

#[tokio::test]
#[ignore = "Requires MCP client connection"]
async fn test_invalid_iso_format() {
    // Test error handling for malformed ISO strings
}

#[tokio::test]
#[ignore = "Requires MCP client connection"]
async fn test_invalid_components() {
    // Test error handling for invalid date components (e.g., month=13)
}

// Unit tests for datetime components validation
#[test]
fn test_chrono_parses_valid_iso8601_utc() {
    let result = DateTime::parse_from_rfc3339("2024-07-11T15:30:00Z");
    assert!(result.is_ok());
}

#[test]
fn test_chrono_parses_valid_iso8601_offset() {
    let result = DateTime::parse_from_rfc3339("2024-07-11T15:30:00+05:00");
    assert!(result.is_ok());
}

#[test]
fn test_chrono_rejects_invalid_iso8601() {
    let result = DateTime::parse_from_rfc3339("not-a-date");
    assert!(result.is_err());
}

#[test]
fn test_chrono_naive_parses_valid() {
    let result = NaiveDateTime::parse_from_str("2024-07-11T15:30:00", "%Y-%m-%dT%H:%M:%S");
    assert!(result.is_ok());
}

#[test]
fn test_chrono_naive_rejects_invalid() {
    let result = NaiveDateTime::parse_from_str("not-a-date", "%Y-%m-%dT%H:%M:%S");
    assert!(result.is_err());
}
