from fastapi import FastAPI, BackgroundTasks, HTTPException, Request
from pydantic import BaseModel
from typing import List, Optional, Dict, Any
import logging
import os
import json

# Import agents (we will create these files next)
from agents.technical_auditor import TechnicalAuditorAgent
from agents.content_optimizer import ContentOptimizationAgent
from agents.competitor_intelligence import CompetitorIntelligenceAgent
from agents.backlink_indexing import BacklinkIndexingAgent
from agents.performance_analytics import PerformanceAnalyticsAgent
from agents.orchestrator import OrchestratorAgent

logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

app = FastAPI(title="SEO Multi-Agent System", version="1.0.0")

def setup_credentials_from_env():
    """Security: Write env vars to files so agents can use them without committing secrets to repo"""
    os.makedirs("/app/credentials", exist_ok=True)
    
    # GSC
    gsc_json = os.environ.get("GSC_CREDENTIALS")
    if gsc_json:
        print("Loading GSC credentials from Environment Variable")
        with open("/app/credentials/gsc-credentials.json", "w") as f:
            f.write(gsc_json)
            
    # GA4
    ga4_json = os.environ.get("GA4_CREDENTIALS")
    if ga4_json:
        print("Loading GA4 credentials from Environment Variable")
        with open("/app/credentials/ga4-credentials.json", "w") as f:
            f.write(ga4_json)

    # DEBUG: Print the email being used
    try:
        with open("/app/credentials/gsc-credentials.json", "r") as f:
            creds = json.load(f)
            print(f"🕵️ DEBUG: Using Service Account Email: {creds.get('client_email')}")
            print(f"🕵️ DEBUG: Make sure THIS email is an Owner in GSC for https://fixyfile.com")
    except Exception as e:
        print(f"Could not read credentials for debug: {e}")

# Run setup immediately
setup_credentials_from_env()

def get_credential_path(filename):
    """Helper to find credentials in common paths"""
    possible_paths = [
        f"/app/credentials/{filename}",
        f"/app/{filename}",
        f"./{filename}",
        filename
    ]
    for path in possible_paths:
        if os.path.exists(path):
            return path
    return f"/app/credentials/{filename}" # Default

# Initialize agents
# Note: In a real deployment, credentials would be loaded from env vars or mounted secrets
technical_agent = TechnicalAuditorAgent()
content_agent = ContentOptimizationAgent()
competitor_agent = CompetitorIntelligenceAgent()
indexing_agent = BacklinkIndexingAgent(
    gsc_credentials_path=get_credential_path("gsc-credentials.json"),
    site_url="https://fixyfile.com"
)
analytics_agent = PerformanceAnalyticsAgent(
    ga4_property_id="YOUR_GA4_ID", # Replace with actual if known
    ga4_credentials_path=get_credential_path("ga4-credentials.json"),
    gsc_credentials_path=get_credential_path("gsc-credentials.json"),
    # CRITICAL: For Domain Properties (fixyfile.com), use 'sc-domain:' prefix
    site_url="sc-domain:fixyfile.com"
)
# Orchestrator no longer needs Redis as we moved queue logic to Cloudflare D1
orchestrator = OrchestratorAgent(redis_host=None, redis_port=None, agents={})

# --- MODELS ---

class PageAuditRequest(BaseModel):
    url: str
    checks: Optional[List[str]] = ["all"]

class ContentOptimizeRequest(BaseModel):
    url: str
    tasks: Optional[List[str]] = ["all"]

class CompetitorAnalysisRequest(BaseModel):
    keyword: str

class IndexingRequest(BaseModel):
    urls: List[str]

class WorkflowTrigger(BaseModel):
    workflow_name: str
    payload: Dict[str, Any]

# --- ENDPOINTS ---

@app.get("/")
async def root():
    return {
        "service": "SEO Multi-Agent System",
        "status": "running",
        "agents": ["technical", "content", "competitor", "indexing", "performance"]
    }

@app.get("/health")
async def health_check():
    # Basic check, can expand to check agents
    return {"status": "healthy", "orchestrator": "online"}

# TECHNICAL AUDITOR
@app.post("/audit/execute")
async def execute_audit(request: PageAuditRequest, background_tasks: BackgroundTasks):
    background_tasks.add_task(technical_agent.audit_page, request.url)
    return {"status": "started", "url": request.url}

# CONTENT OPTIMIZER
@app.post("/optimize")
async def optimize_content(request: ContentOptimizeRequest):
    result = content_agent.analyze_page(request.url)
    return result

# COMPETITOR INTELLIGENCE
@app.post("/competitor/analyze")
async def analyze_competitor(request: CompetitorAnalysisRequest, background_tasks: BackgroundTasks):
    background_tasks.add_task(competitor_agent.generate_competitive_report, request.keyword)
    return {"status": "started", "keyword": request.keyword}

# INDEXING
@app.post("/index/submit")
async def submit_indexing(request: IndexingRequest):
    results = indexing_agent.auto_submit_new_pages(request.urls)
    return results

@app.get("/index/status")
async def indexing_status():
    status = indexing_agent.check_indexing_status()
    errors = indexing_agent.get_indexing_errors()
    return {"indexed_pages": status, "errors": errors}

# PERFORMANCE & ANALYTICS
@app.get("/analytics/underperforming")
async def get_underperforming():
    try:
        pages = analytics_agent.get_underperforming_pages(days=30)
        return pages
    except Exception as e:
        logger.error(f"Error getting underperforming pages: {e}")
        return []

@app.get("/report/weekly")
async def weekly_report():
    try:
        report = analytics_agent.generate_weekly_report()
        return report
    except Exception as e:
         logger.error(f"Error generating weekly report: {e}")
         return {"error": str(e)}

@app.get("/monitor/algorithm")
async def check_algorithm():
    try:
        status = analytics_agent.detect_algorithm_update()
        return status
    except Exception as e:
        return {"volatility_detected": False, "error": str(e)}

@app.get("/monitor/cwv")
async def check_cwv(url: str):
    result = analytics_agent.monitor_core_web_vitals(url)
    return result

# ORCHESTRATOR
@app.post("/workflow/trigger")
async def trigger_workflow(request: WorkflowTrigger):
    workflow_id = orchestrator.create_workflow(
        request.workflow_name,
        request.payload
    )
    return {"workflow_id": workflow_id, "status": "started"}