//! Tests for the database models.
//!
//! AI AGENT NOTE: These tests verify model serialization and data integrity.

use chrono::NaiveDateTime;
use invoice_generator::db::models::{NewCard, NewCustomer, NewTransaction};

/// Tests that NewCustomer can be created with valid data.
#[test]
fn new_customer_creation() {
    let customer = NewCustomer {
        customer_number: "12345".to_string(),
        card_report_group: 1,
    };

    assert_eq!(customer.customer_number, "12345");
    assert_eq!(customer.card_report_group, 1);
}

/// Tests that NewCard can be created with valid data.
#[test]
fn new_card_creation() {
    let card = NewCard {
        card_number: "7825017523017000642".to_string(),
        customer_id: 42,
    };

    assert_eq!(card.card_number, "7825017523017000642");
    assert_eq!(card.customer_id, 42);
}

/// Tests that NewTransaction can be created with all fields.
#[test]
fn new_transaction_creation() {
    let date = NaiveDateTime::parse_from_str("2026-02-01 10:15:16", "%Y-%m-%d %H:%M:%S").unwrap();

    let tx = NewTransaction {
        transaction_date: date,
        batch_number: "409".to_string(),
        amount: 559.26,
        volume: 35.85,
        price: 15.60,
        quality_code: 1001,
        quality_name: "95 Oktan".to_string(),
        card_number: "7825017523017000642".to_string(),
        station: "97254".to_string(),
        terminal: "1".to_string(),
        pump: "2".to_string(),
        receipt: "000910".to_string(),
        control_number: None,
        customer_id: Some(1),
    };

    assert_eq!(tx.batch_number, "409");
    assert_eq!(tx.amount, 559.26);
    assert_eq!(tx.volume, 35.85);
    assert_eq!(tx.quality_name, "95 Oktan");
    assert_eq!(tx.customer_id, Some(1));
    assert!(tx.control_number.is_none());
}

/// Tests that NewTransaction can be created with control number.
#[test]
fn new_transaction_with_control_number() {
    let date = NaiveDateTime::parse_from_str("2026-02-01 06:40:14", "%Y-%m-%d %H:%M:%S").unwrap();

    let tx = NewTransaction {
        transaction_date: date,
        batch_number: "409".to_string(),
        amount: 267.23,
        volume: 17.13,
        price: 15.60,
        quality_code: 1001,
        quality_name: "95 Oktan".to_string(),
        card_number: "554477******9952".to_string(),
        station: "97254".to_string(),
        terminal: "1".to_string(),
        pump: "2".to_string(),
        receipt: "000898".to_string(),
        control_number: Some("756969".to_string()),
        customer_id: None,
    };

    assert_eq!(tx.control_number, Some("756969".to_string()));
    assert!(tx.customer_id.is_none());
}

/// Tests decimal precision for monetary values.
#[test]
fn transaction_decimal_precision() {
    let date = NaiveDateTime::parse_from_str("2026-02-01 10:15:16", "%Y-%m-%d %H:%M:%S").unwrap();

    let tx = NewTransaction {
        transaction_date: date,
        batch_number: "409".to_string(),
        amount: 123.45,
        volume: 7.891,
        price: 15.625,
        quality_code: 1001,
        quality_name: "95 Oktan".to_string(),
        card_number: "CARD123".to_string(),
        station: "1".to_string(),
        terminal: "1".to_string(),
        pump: "1".to_string(),
        receipt: "001".to_string(),
        control_number: None,
        customer_id: None,
    };

    // Verify precision is maintained
    assert_eq!(tx.amount, 123.45);
    assert_eq!(tx.volume, 7.891);
    assert_eq!(tx.price, 15.625);
}

/// Tests that anonymized transactions have no customer.
#[test]
fn anonymized_transaction_has_no_customer() {
    let date = NaiveDateTime::parse_from_str("2026-02-01 06:40:14", "%Y-%m-%d %H:%M:%S").unwrap();

    let tx = NewTransaction {
        transaction_date: date,
        batch_number: "409".to_string(),
        amount: 267.23,
        volume: 17.13,
        price: 15.60,
        quality_code: 1001,
        quality_name: "95 Oktan".to_string(),
        card_number: "554477******9952".to_string(),
        station: "97254".to_string(),
        terminal: "1".to_string(),
        pump: "2".to_string(),
        receipt: "000898".to_string(),
        control_number: Some("756969".to_string()),
        customer_id: None,
    };

    assert!(tx.customer_id.is_none());
    // Card number is still stored
    assert_eq!(tx.card_number, "554477******9952");
}