# Copyright 2026 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""System, environment, and device diagnostics (artemis doctor)."""

import platform as sys_platform
import subprocess
import sys

from rich.console import Console
from rich.panel import Panel
from rich.table import Table

from artemis.config import (
    parse_llm_config,
    settings,
)
from artemis.platform import OSType, platform
from artemis.toolchain import toolchain
from artemis.utils.ocr_api import is_ocr_configured


def doctor_command() -> None:
    """Run diagnostics to inspect system dependencies, device connectivity, and configuration."""
    console = Console()
    console.print()
    os_name = sys_platform.system()
    arch_name = sys_platform.machine()
    console.print(
        Panel(
            f"[bold cyan]☕ Artemis System & Environment Doctor[/bold cyan]\n"
            f"[dim]Platform: {os_name} ({arch_name}) | PAL: {platform.os_type.value}[/dim]",
            expand=False,
        )
    )

    table = Table(show_header=True, header_style="bold magenta")
    table.add_column("Component", style="dim", width=22)
    table.add_column("Status", width=12)
    table.add_column("Details & Recommendations")

    all_passed = True

    # 1. Python Version
    py_ver = f"{sys.version_info.major}.{sys.version_info.minor}.{sys.version_info.micro}"
    if sys.version_info >= (3, 12):
        table.add_row(
            "Python Runtime",
            "[bold green]✔ OK[/bold green]",
            f"Python {py_ver} ({arch_name}, 64-bit)",
        )
    else:
        all_passed = False
        table.add_row(
            "Python Runtime",
            "[bold red]✖ Warning[/bold red]",
            f"Python {py_ver} detected. Python >= 3.12 is strongly recommended.",
        )

    # 2. ADB Installation & Server
    adb_path = toolchain.resolve("adb")
    if adb_path:
        try:
            res = subprocess.run(
                [adb_path, "version"],
                capture_output=True,
                text=True,
                timeout=5,
                encoding="utf-8",
                errors="replace",
            )
            adb_info = res.stdout.splitlines()[0] if res.stdout else "Installed"
            table.add_row(
                "Android ADB", "[bold green]✔ OK[/bold green]", f"{adb_path} ({adb_info})"
            )
        except Exception:
            table.add_row("Android ADB", "[bold green]✔ OK[/bold green]", f"{adb_path}")
    else:
        all_passed = False
        hint = (
            "Run: winget install Google.PlatformTools"
            if platform.os_type == OSType.WINDOWS
            else "Run: brew install android-platform-tools"
            if platform.os_type == OSType.MACOS
            else "Run: sudo apt-get install -y adb"
        )
        table.add_row(
            "Android ADB",
            "[bold red]✖ Missing[/bold red]",
            f"adb not found in PATH or Android SDK. {hint}",
        )

    # 3. Connected Android Devices
    devices_info: list[tuple[str, str, str]] = []
    if adb_path:
        try:
            res = subprocess.run(
                [adb_path, "devices", "-l"],
                capture_output=True,
                text=True,
                timeout=5,
                encoding="utf-8",
                errors="replace",
            )
            lines = [line_str.strip() for line_str in res.stdout.splitlines() if line_str.strip()]
            for line in lines[1:]:  # skip 'List of devices attached'
                parts = line.split()
                if len(parts) >= 2:
                    serial = parts[0]
                    state = parts[1]
                    extra = " ".join(parts[2:])
                    devices_info.append((serial, state, extra))
        except Exception:
            pass

    if devices_info:
        active_devices = [d for d in devices_info if d[1] == "device"]
        if active_devices:
            summary = "\n".join(
                [
                    f"• [bold cyan]{d[0]}[/bold cyan] ({d[2] or 'Authorized'})"
                    for d in active_devices
                ]
            )
            table.add_row("Android Devices", "[bold green]✔ Connected[/bold green]", summary)
        else:
            all_passed = False
            table.add_row(
                "Android Devices",
                "[bold yellow]⚠ Unauthorized[/bold yellow]",
                "Device detected but unauthorized. Check phone screen for USB Debugging prompt.",
            )
    else:
        table.add_row(
            "Android Devices",
            "[bold yellow]⚠ None Found[/bold yellow]",
            "No Android device or emulator detected. Connect phone via USB or start emulator.",
        )

    # 4. LLM & Vision OCR Key Configuration
    gemini_key = settings.get_api_key("google")
    ocr_key = settings.get_api_key("ocr")
    openai_key = settings.get_api_key("openai")
    claude_key = settings.get_api_key("anthropic")
    openrouter_key = settings.get_api_key("openrouter")

    configured_keys = []
    if gemini_key:
        val = gemini_key.get_secret_value()
        masked = f"{val[:6]}...{val[-4:]}" if len(val) > 10 else "***"
        configured_keys.append(f"Gemini LLM ({masked})")
    if openai_key:
        configured_keys.append("OpenAI")
    if claude_key:
        configured_keys.append("Anthropic")
    if openrouter_key:
        configured_keys.append("OpenRouter")

    if configured_keys:
        table.add_row(
            "LLM Providers", "[bold green]✔ Configured[/bold green]", ", ".join(configured_keys)
        )
    else:
        all_passed = False
        table.add_row(
            "LLM Providers",
            "[bold red]✖ Missing[/bold red]",
            "No LLM key found in .env. Run [bold cyan]artemis init[/bold cyan] to configure.",
        )

    # 5. Vision OCR Key Check (Optional)
    if is_ocr_configured() and ocr_key:
        val = ocr_key.get_secret_value()
        masked = f"{val[:6]}...{val[-4:]}" if len(val) > 10 else "***"
        table.add_row(
            "Vision OCR",
            "[bold green]✔ Configured[/bold green]",
            f"Google Cloud Vision API ({masked})",
        )
    else:
        table.add_row(
            "Vision OCR",
            "[bold cyan]○ Optional[/bold cyan]",
            "OCR_API_KEY is not set. Perception operates in pure XML layout mode.",
        )

    # 6. Configuration File Health
    try:
        cfg = parse_llm_config()
        planner_model = cfg.planner.model
        table.add_row(
            "Configuration",
            "[bold green]✔ Valid[/bold green]",
            f"config/artemis.jsonc parsed (Planner: {planner_model})",
        )
    except Exception as e:
        all_passed = False
        table.add_row(
            "Configuration",
            "[bold red]✖ Error[/bold red]",
            f"Failed to parse config/artemis.jsonc: {e}",
        )

    # 7. Video Recording Tools (FFmpeg & scrcpy)
    ffmpeg_path = toolchain.resolve("ffmpeg")
    scrcpy_path = toolchain.resolve("scrcpy")

    if ffmpeg_path:
        table.add_row(
            "FFmpeg Tools", "[bold green]✔ Installed[/bold green]", f"{ffmpeg_path} (Video ready)"
        )
    else:
        hint = (
            "winget install Gyan.FFmpeg"
            if platform.os_type == OSType.WINDOWS
            else "brew install ffmpeg"
            if platform.os_type == OSType.MACOS
            else "sudo apt-get install -y ffmpeg"
        )
        table.add_row(
            "FFmpeg Tools",
            "[dim]⚪ Optional[/dim]",
            f"Not found. ({hint})",
        )

    if scrcpy_path:
        table.add_row(
            "Screen Recorder",
            "[bold green]✔ Installed[/bold green]",
            f"{scrcpy_path} (Live stream ready)",
        )
    else:
        hint = (
            "winget install Genymobile.scrcpy"
            if platform.os_type == OSType.WINDOWS
            else "brew install scrcpy"
            if platform.os_type == OSType.MACOS
            else "sudo apt-get install -y scrcpy"
        )
        table.add_row(
            "Screen Recorder",
            "[dim]⚪ Optional[/dim]",
            f"scrcpy not found. ({hint})",
        )

    console.print(table)
    console.print()

    if all_passed:
        console.print(
            Panel(
                "[bold green]🎉 All system checks passed![/bold green]\n\n"
                "Run your first automation task now:\n"
                '  [bold cyan]artemis run "Open Settings and check Battery level"[/bold cyan]',
                title="Status: Ready",
                expand=False,
            )
        )
    else:
        console.print(
            Panel(
                "[bold yellow]💡 Tip:[/bold yellow] Run [bold cyan]artemis init[/bold cyan] to quickly set up your API key and device.",
                title="Action Required",
                expand=False,
            )
        )
    console.print()