"""Bakoverkompatibel MCP Streamable HTTP-klient for opax-mcp."""
import json
import os
import httpx

OPAX_MCP_URL = os.environ.get(
    "MCP_SERVER_URL",
    "https://opax-mcp-357036551735.us-central1.run.app",
).rstrip("/")
MCP_SECRET = os.environ.get("MCP_SECRET", "")

def _headers(session_id=None):
    h = {
        "Authorization": f"Bearer {MCP_SECRET}",
        "Content-Type": "application/json",
        "Accept": "application/json, text/event-stream",
        "MCP-Protocol-Version": "2025-06-18",
    }
    if session_id:
        h["Mcp-Session-Id"] = session_id
    return h

def _decode(response):
    raw = response.text
    rows = [line[5:].strip() for line in raw.splitlines() if line.startswith("data:")]
    return json.loads(rows[-1] if rows else raw)

def _post(payload, session_id=None):
    with httpx.Client(timeout=60) as client:
        r = client.post(OPAX_MCP_URL, headers=_headers(session_id), json=payload)
        r.raise_for_status()
        return _decode(r), r.headers.get("Mcp-Session-Id")

def _session():
    _, sid = _post({
        "jsonrpc": "2.0",
        "id": 1,
        "method": "initialize",
        "params": {
            "protocolVersion": "2025-06-18",
            "capabilities": {},
            "clientInfo": {"name": "osvxcc", "version": "1.0"},
        },
    })
    _post({"jsonrpc": "2.0", "method": "notifications/initialized"}, sid)
    return sid

def call_tool(tool: str, params: dict = None) -> dict:
    sid = _session()
    reply, _ = _post({
        "jsonrpc": "2.0",
        "id": 3,
        "method": "tools/call",
        "params": {"name": tool, "arguments": params or {}},
    }, sid)
    return reply.get("result", reply)

def list_tools() -> list:
    sid = _session()
    reply, _ = _post({
        "jsonrpc": "2.0",
        "id": 2,
        "method": "tools/list",
        "params": {},
    }, sid)
    return reply.get("result", {}).get("tools", [])

def get_billing_summary() -> dict: return call_tool("get_billing_summary")
def get_billing_forecast() -> dict: return call_tool("get_billing_forecast")
def get_billing_credits() -> dict: return call_tool("get_billing_credits")
def get_billing_anomalies() -> dict: return call_tool("get_billing_anomalies")
def get_billing_history() -> dict: return call_tool("get_billing_history")
def get_billing_budget() -> dict: return call_tool("get_billing_budget")
def set_billing_budget(amount: float, currency: str = "USD") -> dict: return call_tool("set_billing_budget", {"amount": amount, "currency": currency})
def create_invite(email: str, name: str = "", tier: str = "starter") -> dict: return call_tool("create_invite", {"email": email, "name": name, "tier": tier})
def list_customers() -> dict: return call_tool("list_customers")
def send_webhook(message: str, url: str = "") -> dict: return call_tool("send_webhook", {"message": message, "url": url})
def send_email(to: str, subject: str, body: str) -> dict: return call_tool("send_email", {"to": to, "subject": subject, "body": body})
def send_sms(to: str, message: str) -> dict: return call_tool("send_sms", {"to": to, "message": message})
def get_notify_channels() -> dict: return call_tool("get_notify_channels")
def run_jason(prompt: str) -> dict: return call_tool("run_jason", {"prompt": prompt})
def run_emma(prompt: str) -> dict: return call_tool("run_emma", {"prompt": prompt})
def get_health() -> dict: return call_tool("get_health")
def get_build_status() -> dict: return call_tool("get_build_status")
def get_state() -> dict: return call_tool("get_state")
def get_telemetry() -> dict: return call_tool("get_telemetry")
def run_terminal(command: str) -> dict: return call_tool("run_terminal", {"command": command})
def list_commits(repo: str = "", limit: int = 10) -> dict: return call_tool("list_commits", {"repo": repo, "limit": limit})
def get_file(path: str, repo: str = "") -> dict: return call_tool("get_file", {"path": path, "repo": repo})
def list_open_issues(repo: str = "") -> dict: return call_tool("list_open_issues", {"repo": repo})
def create_github_issue(title: str, body: str = "", repo: str = "") -> dict: return call_tool("create_github_issue", {"title": title, "body": body, "repo": repo})
def push_file(path: str, content: str, message: str = "", sha: str = "", repo: str = "") -> dict: return call_tool("push_file", {"path": path, "content": content, "message": message, "sha": sha, "repo": repo})

def get_all_function_tools() -> list:
    try:
        from google.adk.tools import FunctionTool
        return [FunctionTool(func=f) for f in [
            get_billing_summary, get_billing_forecast, get_billing_credits,
            get_billing_anomalies, get_billing_history, get_billing_budget,
            set_billing_budget, create_invite, list_customers, send_webhook,
            send_email, send_sms, get_notify_channels, run_jason, run_emma,
            get_health, get_build_status, get_state, get_telemetry,
            run_terminal, list_commits, get_file, list_open_issues,
            create_github_issue, push_file,
        ]]
    except ImportError:
        return []