#!/usr/bin/env tclsh

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Basic DROP TABLE functionality
do_execsql_test_on_specific_db {:memory:} drop-table-basic-1 {
    CREATE TABLE t1(x INTEGER PRIMARY KEY);
    INSERT INTO t1 VALUES (1);
    INSERT INTO t1 VALUES (2);
    DROP TABLE t1;
    SELECT count(*) FROM sqlite_schema WHERE type='table' AND name='t1';
} {0}

# Test DROP TABLE IF EXISTS on existing table
do_execsql_test_on_specific_db {:memory:} drop-table-if-exists-1 {
    CREATE TABLE t2(x INTEGER PRIMARY KEY);
    DROP TABLE IF EXISTS t2;
    SELECT count(*) FROM sqlite_schema WHERE type='table' AND name='t2';
} {0}

# Test DROP TABLE IF EXISTS on non-existent table
do_execsql_test_on_specific_db {:memory:} drop-table-if-exists-2 {
    DROP TABLE IF EXISTS nonexistent_table;
    SELECT 'success';
} {success}

if {[info exists ::env(SQLITE_EXEC)] && ($::env(SQLITE_EXEC) eq "scripts/limbo-sqlite3-index-experimental" || $::env(SQLITE_EXEC) eq "sqlite3")} {
    # Test dropping table with index
    do_execsql_test_on_specific_db {:memory:} drop-table-with-index-1 {
        CREATE TABLE t3(x INTEGER PRIMARY KEY, y TEXT);
        CREATE INDEX idx_t3_y ON t3(y);
        INSERT INTO t3 VALUES(1, 'one');
        DROP TABLE t3;
        SELECT count(*) FROM sqlite_schema WHERE tbl_name='t3';
    } {0}
    # Test dropping table cleans up related schema entries
    do_execsql_test_on_specific_db {:memory:} drop-table-schema-cleanup-1 {
        CREATE TABLE t4(x INTEGER PRIMARY KEY, y TEXT);
        CREATE INDEX idx1_t4 ON t4(x);
        CREATE INDEX idx2_t4 ON t4(y);
        INSERT INTO t4 VALUES(1, 'one');
        DROP TABLE t4;
        SELECT count(*) FROM sqlite_schema WHERE tbl_name='t4';
    } {0}
}


# Test dropping table after multiple inserts and deletes
do_execsql_test_on_specific_db {:memory:} drop-table-after-ops-1 {
    CREATE TABLE t6(x INTEGER PRIMARY KEY);
    INSERT INTO t6 VALUES (1);
    INSERT INTO t6 VALUES (2);
    DELETE FROM t6 WHERE x = 1;
    INSERT INTO t6 VALUES (3);
    DROP TABLE t6;
    SELECT count(*) FROM sqlite_schema WHERE type='table' AND name='t6';
} {0}