#!/usr/bin/env python3
import re
from pyspark.sql import SparkSession

spark = SparkSession.builder \
    .appName('hivesql_bench_init') \
    .enableHiveSupport() \
    .config('spark.sql.warehouse.dir', '/tmp/hive_warehouse') \
    .getOrCreate()

spark.sql('CREATE DATABASE IF NOT EXISTS internal_platform_db')


def _execute_sql_file(spark, sql_path):
    """Read SQL file, remove SuperSQL SET headers, split by semicolons, execute."""
    with open(sql_path, 'r', encoding='utf-8') as f:
        content = f.read()
    content = re.sub(r'^\s*set\s+query_engine\.\S+\n?', '', content, flags=re.IGNORECASE)
    stmts, cur, in_sq, in_dq, i = [], [], False, False, 0
    while i < len(content):
        ch = content[i]
        if ch == '\\' and i + 1 < len(content):
            cur.append(ch); cur.append(content[i + 1]); i += 2; continue
        if ch == '-' and i + 1 < len(content) and content[i + 1] == '-' and not in_sq and not in_dq:
            while i < len(content) and content[i] != '\n':
                i += 1
            cur.append('\n'); continue
        if ch == "'" and not in_dq:
            in_sq = not in_sq
        elif ch == '"' and not in_sq:
            in_dq = not in_dq
        if ch == ';' and not in_sq and not in_dq:
            s = ''.join(cur).strip()
            if s:
                stmts.append(s)
            cur = []
        else:
            cur.append(ch)
        i += 1
    last = ''.join(cur).strip()
    if last:
        stmts.append(last)
    for stmt in stmts:
        spark.sql(stmt)


_execute_sql_file(spark, '/tmp_workspace/init_db.sql')

tables = spark.sql('SHOW TABLES IN internal_platform_db').collect()
print(f'Init complete, {len(tables)} tables created')
for t in tables:
    print(f'  - {t.namespace}.{t.tableName}')
spark.stop()