"""Agent tools: sub_agent, skill_manage, plugin_manage, cron_manage, mcp_manage, node_manage."""
import json
from .tool_registry import register
from .core import SubAgent, SkillLoader


@register('sub_agent')
def handle_sub_agent(args: dict) -> str:
    action = args.get('action', 'list')
    if action == 'spawn':
        task = args.get('task', '')
        if not task:
            return '❌ Task is required'
        model = args.get('model')
        agent_id = SubAgent.spawn(task, model=model)
        return f'🤖 Sub-agent spawned: [{agent_id}]\nTask: {task[:100]}\nWill notify on completion.'
    elif action == 'list':
        agents = SubAgent.list_agents()
        if not agents:
            return '📋 No running sub-agents.'
        lines = []
        for a in agents:
            icon = '🟢' if a['status'] == 'running' else '✅' if a['status'] == 'completed' else '❌'
            lines.append(f'{icon} [{a["id"]}] {a["task"]} — {a["status"]}')
        return '\n'.join(lines)
    elif action == 'result':
        agent_id = args.get('agent_id', '')
        info = SubAgent.get_result(agent_id)
        if 'error' in info:
            return f'❌ {info["error"]}'
        status = info['status']
        if status == 'running':
            return f'⏳ [{agent_id}] Still running.\nStarted: {info["started"]}'
        result = info.get('result', '(no result)')
        return f'{"✅" if status == "completed" else "❌"} [{agent_id}] {status}\nStarted: {info["started"]}\nFinished: {info["completed"]}\n\n{result[:3000]}'
    elif action == 'send':
        agent_id = args.get('agent_id', '')
        message = args.get('message', '')
        if not agent_id or not message:
            return '❌ agent_id and message are required'
        result = SubAgent.send_message(agent_id, message)
        return result
    return f'❌ Unknown action: {action}'


@register('skill_manage')
def handle_skill_manage(args: dict) -> str:
    action = args.get('action', 'list')
    if action == 'list':
        skills = SkillLoader.scan()
        if not skills:
            return '📚 No skills registered.\nCreate a skill directory in skills/ and add SKILL.md.'
        lines = []
        for s in skills:
            lines.append(f'📚 **{s["name"]}** ({s["dir_name"]})\n   {s["description"]}\n   Size: {s["size"]}chars')
        return '\n'.join(lines)
    elif action == 'load':
        skill_name = args.get('skill_name', '')
        content = SkillLoader.load(skill_name)
        if not content:
            return f'❌ Skill "{skill_name}" not found'
        return f'📚 Skill loaded: {skill_name}\n\n{content[:5000]}'
    elif action == 'match':
        query = args.get('query', '')
        content = SkillLoader.match(query)
        if not content:
            return 'No matching skill found.'
        return f'📚 Auto-matched skill:\n\n{content[:5000]}'
    elif action == 'install':
        url = args.get('url', '')
        if not url:
            return '❌ url is required (Git URL or GitHub shorthand user/repo)'
        return SkillLoader.install(url)
    elif action == 'uninstall':
        skill_name = args.get('skill_name', '')
        if not skill_name:
            return '❌ skill_name is required'
        return SkillLoader.uninstall(skill_name)
    return f'❌ Unknown action: {action}'


@register('plugin_manage')
def handle_plugin_manage(args: dict) -> str:
    from .core import PluginLoader
    action = args.get('action', 'list')
    if action == 'list':
        tools = PluginLoader.get_all_tools()
        plugins = PluginLoader._plugins
        if not plugins:
            return '🔌 No plugins loaded. Add .py files to plugins/ directory.'
        lines = ['🔌 **Plugins:**']
        for name_, info in plugins.items():
            lines.append(f"  📦 {name_} — {len(info['tools'])} tools ({info['path']})")
            for t in info['tools']:
                lines.append(f"    🔧 {t['name']}: {t['description'][:60]}")
        return '\n'.join(lines)
    elif action == 'reload':
        count = PluginLoader.reload()
        return f'🔌 Plugins reloaded: {count} tools loaded'
    return f'❌ Unknown action: {action}'


@register('cron_manage')
def handle_cron_manage(args: dict) -> str:
    from .core import _llm_cron
    if not _llm_cron:
        return '❌ LLM cron manager not initialized'
    action = args.get('action', 'list')
    if action == 'list':
        jobs = _llm_cron.list_jobs()
        if not jobs:
            return '⏰ No scheduled jobs.'
        lines = ['⏰ **Scheduled Jobs:**']
        for j in jobs:
            status = '✅' if j['enabled'] else '⏸️'
            lines.append(f"{status} [{j['id']}] {j['name']} — {j['schedule']} (runs: {j['run_count']})")
        return '\n'.join(lines)
    elif action == 'add':
        name_ = args.get('name', 'Untitled')
        prompt = args.get('prompt', '')
        schedule = args.get('schedule', {})
        if not prompt:
            return '❌ prompt is required'
        if not schedule:
            return '❌ schedule is required (kind: cron/every/at)'
        model = args.get('model')
        job = _llm_cron.add_job(name_, schedule, prompt, model=model)
        return f"⏰ Job registered: [{job['id']}] {name_}"
    elif action == 'remove':
        job_id = args.get('job_id', '')
        if _llm_cron.remove_job(job_id):
            return f'⏰ Job removed: {job_id}'
        return f'❌ Job not found: {job_id}'
    elif action == 'toggle':
        job_id = args.get('job_id', '')
        for j in _llm_cron.jobs:
            if j['id'] == job_id:
                j['enabled'] = not j['enabled']
                _llm_cron.save_jobs()
                return f"⏰ {j['name']}: {'enabled' if j['enabled'] else 'disabled'}"
        return f'❌ Job not found: {job_id}'
    return f'❌ Unknown action: {action}'


@register('mcp_manage')
def handle_mcp_manage(args: dict) -> str:
    from .mcp import mcp_manager
    action = args.get('action', 'list')
    if action == 'list':
        servers = mcp_manager.list_servers()
        if not servers:
            return '🔌 No MCP servers connected. mcp_manage(action="add", name="...", command="...") to add.'
        lines = ['🔌 **MCP Servers:**']
        for s in servers:
            status = '🟢' if s['connected'] else '🔴'
            lines.append(f"  {status} {s['name']} — {s['tools']} tools ({' '.join(s['command'])})")
        return '\n'.join(lines)
    elif action == 'add':
        sname = args.get('name', '')
        cmd_str = args.get('command', '')
        if not sname or not cmd_str:
            return '❌ name and command are required'
        cmd_list = cmd_str.split()
        env = args.get('env', {})
        ok = mcp_manager.add_server(sname, cmd_list, env=env)
        if ok:
            mcp_manager.save_config()
            tools_count = len([t for t in mcp_manager.get_all_tools() if t.get('_mcp_server') == sname])
            return f'🔌 MCP server added: {sname} ({tools_count} tools)'
        return f'❌ MCP server connection failed: {sname}'
    elif action == 'remove':
        sname = args.get('name', '')
        mcp_manager.remove_server(sname)
        mcp_manager.save_config()
        return f'🔌 MCP server removed: {sname}'
    elif action == 'tools':
        all_mcp = mcp_manager.get_all_tools()
        if not all_mcp:
            return '🔌 No MCP tools (no servers connected)'
        lines = [f'🔌 **MCP Tools ({len(all_mcp)}):**']
        for t in all_mcp:
            lines.append(f"  🔧 {t['name']}: {t['description'][:80]}")
        return '\n'.join(lines)
    return f'❌ Unknown action: {action}'


@register('node_manage')
def handle_node_manage(args: dict) -> str:
    from .nodes import node_manager
    action = args.get('action', 'list')
    if action == 'list':
        nodes = node_manager.list_nodes()
        if not nodes:
            return '📡 No nodes registered. node_manage(action="add", name="...", host="...") to add'
        lines = ['📡 **Nodes:**']
        for n in nodes:
            lines.append(f"  {'🔗' if n['type']=='ssh' else '🌐'} {n['name']} ({n.get('host', n.get('url', '?'))})")
        return '\n'.join(lines)
    elif action == 'add':
        nname = args.get('name', '')
        ntype = args.get('type', 'ssh')
        if not nname:
            return '❌ name is required'
        if ntype == 'ssh':
            host = args.get('host', '')
            if not host:
                return '❌ host is required'
            node_manager.add_ssh_node(nname, host, user=args.get('user', 'root'),
                                      port=args.get('port', 22), key=args.get('key'))
            return f'📡 SSH node added: {nname}'
        elif ntype == 'http':
            url = args.get('url', '')
            if not url:
                return '❌ url is required'
            node_manager.add_http_node(nname, url)
            return f'📡 HTTP node added: {nname}'
        return f'❌ Unknown type: {ntype}'
    elif action == 'remove':
        nname = args.get('name', '')
        if node_manager.remove_node(nname):
            return f'📡 Node removed: {nname}'
        return f'❌ Node not found: {nname}'
    elif action == 'run':
        nname = args.get('name', '')
        cmd = args.get('command', '')
        if not nname or not cmd:
            return '❌ name and command are required'
        result = node_manager.run_on(nname, cmd)
        return json.dumps(result, ensure_ascii=False)[:5000]
    elif action == 'status':
        nname = args.get('name')
        if nname:
            node = node_manager.get_node(nname)
            if not node:
                return f'❌ Node not found: {nname}'
            return json.dumps(node.status(), ensure_ascii=False)[:3000]
        return json.dumps(node_manager.status_all(), ensure_ascii=False)[:5000]
    elif action == 'wake':
        mac = args.get('mac', '')
        if not mac:
            return '❌ mac is required'
        result = node_manager.wake_on_lan(mac)
        return json.dumps(result, ensure_ascii=False)
    return f'❌ Unknown action: {action}'


@register('rag_search')
def handle_rag_search(args: dict) -> str:
    from .rag import rag_engine
    query = args.get('query', '')
    if not query:
        return '❌ query is required'
    max_results = args.get('max_results', 5)
    results = rag_engine.search(query, max_results=max_results)
    if not results:
        return f'🔍 "{query}" No results for'
    lines = [f'🔍 **"{query}" Results ({len(results)}):**']
    for r in results:
        lines.append(f"\n📄 **{r['source']}** (L{r['line']}, score: {r['score']})")
        lines.append(r['text'][:300])
    stats = rag_engine.get_stats()
    lines.append(f"\n📊 Index: {stats['total_chunks']}chunks, {stats['unique_terms']}terms, {stats['db_size_kb']}KB")
    return '\n'.join(lines)
