import argparse
import os
import sys
import readline
import configparser
import atexit
from rich.console import Console
from rich.theme import Theme
from rich.markdown import Markdown
from rich.table import Table
from rich.panel import Panel
from rich.progress import Progress, BarColumn, TimeRemainingColumn
from rich.prompt import Prompt, Confirm
import time  # For simulating AIVA operations

# --- Configuration ---
CONFIG_DIR = os.path.expanduser("~/.aiva")
CONFIG_FILE = os.path.join(CONFIG_DIR, "config.ini")
HISTORY_FILE = os.path.join(CONFIG_DIR, "history")

# --- Rich Configuration ---
custom_theme = Theme({
    "info": "dim cyan",
    "warning": "magenta",
    "danger": "bold red",
    "success": "green",
    "aiva": "bold blue",
    "markdown": "default",
    "table_header": "bold white",
})

console = Console(theme=custom_theme)


# --- Configuration Handling ---
def load_config():
    config = configparser.ConfigParser()
    config['aiva'] = {}  # Ensure 'aiva' section exists by default
    if os.path.exists(CONFIG_FILE):
        config.read(CONFIG_FILE)
    return config


def save_config(config):
    os.makedirs(CONFIG_DIR, exist_ok=True)
    with open(CONFIG_FILE, "w") as configfile:
        config.write(configfile)


# --- History Handling ---
def load_history():
    if os.path.exists(HISTORY_FILE):
        readline.read_history_file(HISTORY_FILE)


def save_history():
    os.makedirs(CONFIG_DIR, exist_ok=True)
    readline.write_history_file(HISTORY_FILE)


# --- Tab Completion ---
class SimpleCompleter:
    def __init__(self, options):
        self.options = sorted(options)

    def complete(self, text, state):
        options = [x for x in self.options if x.startswith(text)]
        if state < len(options):
            return options[state]
        else:
            return None


# --- AIVA Functionality (Placeholder) ---
def aiva_chat(query, config):
    """Simulates an AIVA chat interaction."""
    api_key = config.get('aiva', 'api_key', fallback=None)
    if not api_key:
        console.print("[danger]API Key not set. Please configure using `aiva config set api_key <your_key>`[/danger]")
        return

    with Progress(transient=True) as progress:
        task = progress.add_task("[aiva] Processing...", total=100)
        for i in range(10):
            time.sleep(0.1)
            progress.update(task, advance=10)

    response = f"AIVA's response to: {query} (using API Key: {api_key[:4]}...)"
    console.print(Panel(Markdown(response), title="[aiva] AIVA's Response", border_style="aiva"))

def aiva_query(query, config):
    """Simulates a single AIVA query."""
    api_key = config.get('aiva', 'api_key', fallback=None)
    if not api_key:
        console.print("[danger]API Key not set. Please configure using `aiva config set api_key <your_key>`[/danger]")
        return

    with Progress(transient=True) as progress:
        task = progress.add_task("[aiva] Processing...", total=100)
        for i in range(10):
            time.sleep(0.1)
            progress.update(task, advance=10)

    response = f"AIVA's query result for: {query} (using API Key: {api_key[:4]}...)"
    console.print(Panel(Markdown(response), title="[aiva] AIVA's Query Result", border_style="aiva"))


def aiva_validate(item, config):
    """Simulates validating an item."""
    console.print(f"[aiva] Validating: {item}")
    time.sleep(1)
    console.print("[success]Validation successful![/success]")


def aiva_memory_get(key, config):
    """Simulates getting a value from AIVA's memory."""
    # In a real implementation, you'd interact with a database or other storage.
    memory = {"user_name": "John Doe", "last_query": "What is the capital of France?"}  # Example memory
    if key in memory:
        console.print(f"[aiva] Memory {key}: {memory[key]}")
    else:
        console.print(f"[warning]Key '{key}' not found in memory.[/warning]")


def aiva_memory_set(key, value, config):
    """Simulates setting a value in AIVA's memory."""
    console.print(f"[aiva] Setting memory {key} to: {value}")
    time.sleep(0.5)
    console.print("[success]Memory updated![/success]")


def aiva_skill_list(config):
    """Simulates listing available AIVA skills."""
    skills = ["summarization", "translation", "question_answering"]  # Example skills
    table = Table(title="[aiva]Available Skills", header_style="table_header")
    table.add_column("Skill", style="info")
    for skill in skills:
        table.add_row(skill)
    console.print(table)


def aiva_skill_enable(skill, config):
    """Simulates enabling an AIVA skill."""
    console.print(f"[aiva] Enabling skill: {skill}")
    time.sleep(0.5)
    console.print("[success]Skill enabled![/success]")


def aiva_skill_disable(skill, config):
    """Simulates disabling an AIVA skill."""
    console.print(f"[aiva] Disabling skill: {skill}")
    time.sleep(0.5)
    console.print("[success]Skill disabled![/success]")


def aiva_status(config):
    """Simulates displaying AIVA system status."""
    table = Table(title="[aiva]System Status", header_style="table_header")
    table.add_column("Metric", style="info")
    table.add_column("Value", style="success")
    table.add_row("CPU Usage", "25%")
    table.add_row("Memory Usage", "60%")
    table.add_row("Active Skills", "3")
    console.print(table)


# --- CLI Command Functions ---
def do_chat(args, config):
    """Handles the 'chat' command."""
    if args.interactive:
        console.print("[info]Entering interactive chat mode. Type 'exit' to quit.[/info]")
        while True:
            try:
                query = Prompt.ask("[aiva] You")
                if query.lower() == "exit":
                    break
                aiva_chat(query, config)
            except KeyboardInterrupt:
                console.print("\n[info]Exiting interactive chat mode.[/info]")
                break
    else:
        aiva_chat(args.query, config)


def do_query(args, config):
    """Handles the 'query' command."""
    aiva_query(args.query, config)


def do_validate(args, config):
    """Handles the 'validate' command."""
    aiva_validate(args.item, config)


def do_memory(args, config):
    """Handles the 'memory' command."""
    if args.action == "get":
        aiva_memory_get(args.key, config)
    elif args.action == "set":
        aiva_memory_set(args.key, args.value, config)


def do_skill(args, config):
    """Handles the 'skill' command."""
    if args.action == "list":
        aiva_skill_list(config)
    elif args.action == "enable":
        aiva_skill_enable(args.name, config)
    elif args.action == "disable":
        aiva_skill_disable(args.name, config)


def do_status(args, config):
    """Handles the 'status' command."""
    aiva_status(config)


def do_config(args, config):
    """Handles the 'config' command."""
    if args.action == "get":
        value = config.get('aiva', args.key, fallback=None)
        if value:
            console.print(f"[aiva] {args.key}: {value}")
        else:
            console.print(f"[warning]Key '{args.key}' not found in config.[/warning]")
    elif args.action == "set":
        config['aiva'][args.key] = args.value
        save_config(config)
        console.print(f"[success]Set {args.key} to {args.value}[/success]")


# --- Argument Parser Setup ---
def create_parser():
    parser = argparse.ArgumentParser(description="AIVA CLI")
    subparsers = parser.add_subparsers(dest="command", help="AIVA commands")

    # Chat command
    chat_parser = subparsers.add_parser("chat", help="Chat with AIVA")
    chat_parser.add_argument(
        "-i", "--interactive", action="store_true", help="Enter interactive chat mode"
    )
    chat_parser.add_argument("query", nargs="?", help="Single query for AIVA", default=None)
    chat_parser.set_defaults(func=do_chat)

    # Query command
    query_parser = subparsers.add_parser("query", help="Perform a single query")
    query_parser.add_argument("query", help="The query to perform")
    query_parser.set_defaults(func=do_query)

    # Validate command
    validate_parser = subparsers.add_parser("validate", help="Validate an item")
    validate_parser.add_argument("item", help="The item to validate")
    validate_parser.set_defaults(func=do_validate)

    # Memory command
    memory_parser = subparsers.add_parser("memory", help="Manage AIVA's memory")
    memory_subparsers = memory_parser.add_subparsers(dest="action", help="Memory actions")

    memory_get_parser = memory_subparsers.add_parser("get", help="Get a memory value")
    memory_get_parser.add_argument("key", help="The memory key")
    memory_get_parser.set_defaults(func=do_memory)

    memory_set_parser = memory_subparsers.add_parser("set", help="Set a memory value")
    memory_set_parser.add_argument("key", help="The memory key")
    memory_set_parser.add_argument("value", help="The memory value")
    memory_set_parser.set_defaults(func=do_memory)

    # Skill command
    skill_parser = subparsers.add_parser("skill", help="Manage AIVA's skills")
    skill_subparsers = skill_parser.add_subparsers(dest="action", help="Skill actions")

    skill_list_parser = skill_subparsers.add_parser("list", help="List available skills")
    skill_list_parser.set_defaults(func=do_skill)

    skill_enable_parser = skill_subparsers.add_parser("enable", help="Enable a skill")
    skill_enable_parser.add_argument("name", help="The skill name")
    skill_enable_parser.set_defaults(func=do_skill)

    skill_disable_parser = skill_subparsers.add_parser("disable", help="Disable a skill")
    skill_disable_parser.add_argument("name", help="The skill name")
    skill_disable_parser.set_defaults(func=do_skill)

    # Status command
    status_parser = subparsers.add_parser("status", help="Display AIVA system status")
    status_parser.set_defaults(func=do_status)

    # Config command
    config_parser = subparsers.add_parser("config", help="Manage AIVA configuration")
    config_subparsers = config_parser.add_subparsers(dest="action", help="Config actions")

    config_get_parser = config_subparsers.add_parser("get", help="Get a config value")
    config_get_parser.add_argument("key", help="The config key")
    config_get_parser.set_defaults(func=do_config)

    config_set_parser = config_subparsers.add_parser("set", help="Set a config value")
    config_set_parser.add_argument("key", help="The config key")
    config_set_parser.add_argument("value", help="The config value")
    config_set_parser.set_defaults(func=do_config)

    return parser


# --- Main Function ---
def main():
    config = load_config()
    load_history()
    atexit.register(save_history)

    parser = create_parser()
    args = parser.parse_args()

    completer = SimpleCompleter(
        [subparser for action in parser._actions if isinstance(action, argparse._SubParsersAction)
         for subparser in action.choices]
    )
    readline.set_completer(completer.complete)
    readline.parse_and_bind("tab: complete")

    if args.command:
        try:
            args.func(args, config)
        except Exception as e:
            console.print_exception()
    else:
        parser.print_help()


if __name__ == "__main__":
    main()