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import sqlite3
import json
from datetime import datetime
from pathlib import Path
from dotenv import load_dotenv

load_dotenv(override=True)

# Resolve the database from the project directory, rather than the process
# working directory.  The dashboard and the scheduler are often started from
# different directories; a relative path makes each process create/read a
# different database and produces an apparently empty dashboard.
DB = str(Path(__file__).resolve().parents[1] / "accounts.db")


with sqlite3.connect(DB) as conn:
    cursor = conn.cursor()
    cursor.execute('CREATE TABLE IF NOT EXISTS accounts (name TEXT PRIMARY KEY, account TEXT)')
    cursor.execute('''
        CREATE TABLE IF NOT EXISTS logs (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            name TEXT,
            datetime DATETIME,
            type TEXT,
            message TEXT
        )
    ''')
    conn.commit()

def write_account(name, account_dict):
    json_data = json.dumps(account_dict)
    with sqlite3.connect(DB) as conn:
        cursor = conn.cursor()
        cursor.execute('''
            INSERT INTO accounts (name, account)
            VALUES (?, ?)
            ON CONFLICT(name) DO UPDATE SET account=excluded.account
        ''', (name.lower(), json_data))
        conn.commit()

def read_account(name):
    with sqlite3.connect(DB) as conn:
        cursor = conn.cursor()
        cursor.execute('SELECT account FROM accounts WHERE name = ?', (name.lower(),))
        row = cursor.fetchone()
        return json.loads(row[0]) if row else None
    
def write_log(name: str, type: str, message: str):
    """
    Write a log entry to the logs table.
    
    Args:
        name (str): The name associated with the log
        type (str): The type of log entry
        message (str): The log message
    """
    now = datetime.now().isoformat()
    
    with sqlite3.connect(DB) as conn:
        cursor = conn.cursor()
        cursor.execute('''
            INSERT INTO logs (name, datetime, type, message)
            VALUES (?, datetime('now'), ?, ?)
        ''', (name.lower(), type, message))
        conn.commit()

def read_log(name: str, last_n=10):
    """
    Read the most recent log entries for a given name.
    
    Args:
        name (str): The name to retrieve logs for
        last_n (int): Number of most recent entries to retrieve
        
    Returns:
        list: A list of tuples containing (datetime, type, message)
    """
    with sqlite3.connect(DB) as conn:
        cursor = conn.cursor()
        cursor.execute('''
            SELECT datetime, type, message FROM logs
            WHERE name = ?
            ORDER BY id DESC
            LIMIT ?
        ''', (name.lower(), last_n))
        
        return reversed(cursor.fetchall())