"""
Terra-View - Unified monitoring platform for device fleets
Modular monolith architecture with strict feature boundaries
"""
import os
import logging
from fastapi import FastAPI, Request
from fastapi.middleware.cors import CORSMiddleware
from fastapi.staticfiles import StaticFiles
from fastapi.responses import JSONResponse
from fastapi.exceptions import RequestValidationError

# Configure logging
logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
)
logger = logging.getLogger(__name__)

# Import configuration
from app.core.config import APP_NAME, VERSION, ENVIRONMENT

# Import UI routes
from app.ui import routes as ui_routes

# Import feature module routers (seismo)
from app.seismo.routers import (
    roster as seismo_roster,
    units as seismo_units,
    photos as seismo_photos,
    roster_edit as seismo_roster_edit,
    dashboard as seismo_dashboard,
    dashboard_tabs as seismo_dashboard_tabs,
    activity as seismo_activity,
    seismo_dashboard as seismo_seismo_dashboard,
    settings as seismo_settings,
)
from app.seismo import routes as seismo_legacy_routes

# Import feature module routers (SLM)
from app.slm.routers import (
    nl43_proxy as slm_nl43_proxy,
    dashboard as slm_dashboard,
    ui as slm_ui,
)

# Import API aggregation layer (placeholder for now)
from app.api import dashboard as api_dashboard
from app.api import roster as api_roster

# Initialize database tables
from app.seismo.database import engine as seismo_engine, Base as SeismoBase
SeismoBase.metadata.create_all(bind=seismo_engine)

# Initialize FastAPI app
app = FastAPI(
    title=APP_NAME,
    description="Unified monitoring platform for seismograph, modem, and sound level meter fleets",
    version=VERSION
)

# Add validation error handler to log details
@app.exception_handler(RequestValidationError)
async def validation_exception_handler(request: Request, exc: RequestValidationError):
    logger.error(f"Validation error on {request.url}: {exc.errors()}")
    logger.error(f"Body: {await request.body()}")
    return JSONResponse(
        status_code=400,
        content={"detail": exc.errors()}
    )

# Configure CORS
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Mount static files
app.mount("/static", StaticFiles(directory="app/ui/static"), name="static")

# Middleware to add environment to request state
@app.middleware("http")
async def add_environment_to_context(request: Request, call_next):
    """Middleware to add environment variable to request state"""
    request.state.environment = ENVIRONMENT
    response = await call_next(request)
    return response

# ===== INCLUDE ROUTERS =====

# UI Layer (HTML pages)
app.include_router(ui_routes.router)

# Seismograph Feature Module APIs
app.include_router(seismo_roster.router)
app.include_router(seismo_units.router)
app.include_router(seismo_photos.router)
app.include_router(seismo_roster_edit.router)
app.include_router(seismo_dashboard.router)
app.include_router(seismo_dashboard_tabs.router)
app.include_router(seismo_activity.router)
app.include_router(seismo_seismo_dashboard.router)
app.include_router(seismo_settings.router)
app.include_router(seismo_legacy_routes.router)

# SLM Feature Module APIs
app.include_router(slm_nl43_proxy.router)
app.include_router(slm_dashboard.router)
app.include_router(slm_ui.router)

# API Aggregation Layer (future cross-feature endpoints)
# app.include_router(api_dashboard.router)  # TODO: Implement aggregation
# app.include_router(api_roster.router)     # TODO: Implement aggregation

# ===== ADDITIONAL ROUTES FROM OLD MAIN.PY =====
# These will need to be migrated to appropriate modules

from fastapi.templating import Jinja2Templates
from typing import List, Dict
from pydantic import BaseModel
from sqlalchemy.orm import Session
from fastapi import Depends

from app.seismo.database import get_db
from app.seismo.services.snapshot import emit_status_snapshot
from app.seismo.models import IgnoredUnit

# TODO: Move these to appropriate feature modules or UI layer

@app.post("/api/sync-edits")
async def sync_edits(request: dict, db: Session = Depends(get_db)):
    """Process offline edit queue and sync to database"""
    # TODO: Move to seismo module
    from app.seismo.models import RosterUnit

    class EditItem(BaseModel):
        id: int
        unitId: str
        changes: Dict
        timestamp: int

    class SyncEditsRequest(BaseModel):
        edits: List[EditItem]

    sync_request = SyncEditsRequest(**request)
    results = []
    synced_ids = []

    for edit in sync_request.edits:
        try:
            unit = db.query(RosterUnit).filter_by(id=edit.unitId).first()

            if not unit:
                results.append({
                    "id": edit.id,
                    "status": "error",
                    "reason": f"Unit {edit.unitId} not found"
                })
                continue

            for key, value in edit.changes.items():
                if hasattr(unit, key):
                    if key in ['deployed', 'retired']:
                        setattr(unit, key, value in ['true', True, 'True', '1', 1])
                    else:
                        setattr(unit, key, value if value != '' else None)

            db.commit()

            results.append({
                "id": edit.id,
                "status": "success"
            })
            synced_ids.append(edit.id)

        except Exception as e:
            db.rollback()
            results.append({
                "id": edit.id,
                "status": "error",
                "reason": str(e)
            })

    synced_count = len(synced_ids)

    return JSONResponse({
        "synced": synced_count,
        "total": len(sync_request.edits),
        "synced_ids": synced_ids,
        "results": results
    })


@app.get("/health")
def health_check():
    """Health check endpoint"""
    return {
        "message": f"{APP_NAME} v{VERSION}",
        "status": "running",
        "version": VERSION,
        "modules": ["seismo", "slm"]
    }


if __name__ == "__main__":
    import uvicorn
    from app.core.config import PORT
    uvicorn.run(app, host="0.0.0.0", port=PORT)