//! Matrix coverage for `delete from T where col=val` (ADR-0014).

use crate::typing_surface::*;
use rdbms_playground::input_render::InputState;

#[test]
fn after_delete_expects_from() {
    let schema = schema_serial_pk();
    let a = assess_at_end("delete ", &schema);
    assert!(matches!(a.state, InputState::IncompleteAtEof));
    assert_candidate_present(&a, &["from"]);
    crate::snap!("after_delete", a);
}

#[test]
fn after_from_offers_table_names() {
    let schema = schema_multi_table();
    let a = assess_at_end("delete from ", &schema);
    assert_candidate_present(&a, &["Customers", "Orders"]);
    crate::snap!("after_from", a);
}

#[test]
fn after_table_expects_filter_clause() {
    let schema = schema_serial_pk();
    let a = assess_at_end("delete from Customers ", &schema);
    assert!(matches!(a.state, InputState::IncompleteAtEof));
    assert_candidate_present(&a, &["where", "--all-rows"]);
    crate::snap!("after_table_name", a);
}

#[test]
fn after_where_offers_active_table_columns_no_leakage() {
    let schema = schema_multi_table();
    let a = assess_at_end("delete from Customers where ", &schema);
    assert!(matches!(a.state, InputState::IncompleteAtEof));
    assert_candidate_present(&a, &["id", "Name"]);
    assert_no_candidate_named(&a, &["OrderId", "CustId", "Total"]);
    crate::snap!("after_where", a);
}

#[test]
fn after_where_column_equals_offers_typed_prose() {
    let schema = schema_serial_pk();
    let a = assess_at_end("delete from Customers where Email=", &schema);
    let prose = hint_prose(&a).unwrap_or_else(|| panic!("expected Prose, got {:?}", a.hint));
    assert!(
        prose.contains("Email"),
        "should name `Email`, got prose: {prose:?}",
    );
    assert!(
        prose.contains("quoted string"),
        "should say `quoted string`, got prose: {prose:?}",
    );
    crate::snap!("after_where_equals", a);
}

#[test]
fn complete_delete_with_where_parses() {
    let schema = schema_serial_pk();
    let a = assess_at_end("delete from Customers where id=1", &schema);
    assert!(matches!(a.state, InputState::Valid));
    assert_eq!(a.parse_result.as_deref(), Ok("Delete"));
    crate::snap!("complete_delete", a);
}

#[test]
fn delete_with_datetime_column_says_yyyy_mm_dd_t() {
    let schema = schema_every_type();
    let a = assess_at_end("delete from Things where ts=", &schema);
    let prose = hint_prose(&a).unwrap_or_else(|| panic!("expected Prose, got {:?}", a.hint));
    assert!(
        prose.contains("ts"),
        "should name `ts`, got prose: {prose:?}",
    );
    crate::snap!("datetime_column", a);
}
