"""
This class, DataProcessor, is responsible for interacting with a given API to fetch and process data related to databases and tables. It provides functionalities to:

Retrieve all rows from a specified table.
Fetch all tables associated with a given database.
Extract all data from a specified database.
Fetch specific fields for a table.
Identify and retrieve 'link_row' type fields for a table and for all tables in the provided data.
Additionally, it offers a verbose mode to print detailed messages during its operations.
"""
class DataProcessor:
    def __init__(self, api, verbose=False):
        self.api = api
        self.verbose = verbose

    def print_verbose_message(self, message):
        if self.verbose:
            print(message)

    def get_all_rows_from_table(self, table_id):
        rows = []
        next_url = f"database/rows/table/{table_id}/"

        while next_url:
            response = self.api.request_response(next_url)
            data = self.api.handle_api_response(response)
            if not data:
                break
            rows.extend(data['results'])
            next_url = data['next']

        return rows
    
    def get_tables(self,table_ids):
        tables_data = {}
        for table_id in table_ids:
            table_data = self.get_all_rows_from_table(table_id.strip())
            tables_data[table_id] = table_data
        return tables_data


    def get_all_tables_from_database(self, database_id):
        response = self.api.request_response(f"database/tables/database/{database_id}/")
        return self.api.handle_api_response(response) or []

    def get_all_data_from_database(self, database_id):
        tables = self.get_all_tables_from_database(database_id)
        data = {}

        for table in tables:
            table_id = table['id']
            table_name = table['name']
            data[table_name] = self.get_all_rows_from_table(table_id)

        return data

    def fetch_fields_for_table(self, table_id):
        response = self.api.request_response(f"database/fields/table/{table_id}/")
        if response.status_code == 200:
            return response.json()
        raise Exception(f"Failed to fetch fields for table {table_id}. Status code: {response.status_code}")

    def get_link_fields_for_table(self, table_name):
        fields = self.fetch_fields_for_table(table_name)
        return [field for field in fields if field['type'] == 'link_row']
    
    def get_link_fields_for_all_tables(self, tables_data):
        link_fields = {}
        for table_name in tables_data:
            link_fields_for_table = self.get_link_fields_for_table(table_name)
            link_fields[table_name] = link_fields_for_table
        return link_fields