"""
Shinkan Jinkendo - Main Application Entry Point

Trainer- und Vereinsplattform für Kampfsport-Trainingsplanung
"""
from pathlib import Path

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import JSONResponse
from fastapi.staticfiles import StaticFiles
import os

from slowapi import _rate_limit_exceeded_handler
from slowapi.errors import RateLimitExceeded

from version import APP_VERSION, BUILD_DATE, DB_SCHEMA_VERSION, MODULE_VERSIONS

# Run database migrations on startup
try:
    import run_migrations
    run_migrations.main()
    print("✓ Database migrations completed")
except Exception as e:
    print(f"⚠ Warning: Migration error: {e}")
    print("  Continuing startup - migrations may need manual intervention")

from routers.auth import limiter as auth_rate_limiter

# Initialize FastAPI app
app = FastAPI(
    title="Shinkan Jinkendo API",
    description="Trainer- und Vereinsplattform für Kampfsport-Trainingsplanung",
    version=APP_VERSION
)

# SlowAPI: Rate Limits auf /api/auth/* (Decorator in routers/auth.py)
app.state.limiter = auth_rate_limiter
app.add_exception_handler(RateLimitExceeded, _rate_limit_exceeded_handler)

# CORS — kommaseparierte Liste (z. B. https://dev.shinkan… und http://192.168.x.x:3098)
_cors_raw = os.getenv("ALLOWED_ORIGINS", "http://localhost:3098")
ALLOWED_ORIGINS = [o.strip() for o in _cors_raw.split(",") if o.strip()]

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

# TODO: Initialize Database with migrations

# Version Endpoint (public, no auth)
@app.get("/api/version")
def get_version():
    """Get application version and build info"""
    return {
        "app_version": APP_VERSION,
        "build_date": BUILD_DATE,
        "backend_version": APP_VERSION,
        "modules": MODULE_VERSIONS,
        "db_schema_version": DB_SCHEMA_VERSION,
        "environment": os.getenv("ENVIRONMENT", "development")
    }

# Health Check
@app.get("/health")
def health_check():
    """Health check endpoint"""
    return {"status": "healthy", "version": APP_VERSION}

# Root Endpoint
@app.get("/")
def read_root():
    """Root endpoint - API info"""
    return {
        "app": "Shinkan Jinkendo API",
        "version": APP_VERSION,
        "docs": "/docs",
        "health": "/health"
    }

# Register routers
from routers import auth, profiles, exercises, clubs, skills, training_planning, catalogs, maturity_models, matrix_stack_bundle, import_wiki, import_wiki_admin

app.include_router(auth.router)
app.include_router(profiles.router)
app.include_router(exercises.router)
app.include_router(clubs.router)
app.include_router(skills.router)
app.include_router(training_planning.router)
app.include_router(catalogs.router)
app.include_router(maturity_models.router)
app.include_router(matrix_stack_bundle.router)
app.include_router(import_wiki.router)
app.include_router(import_wiki_admin.router)

# Lokale Medien (Übungen-Uploads) unter MEDIA_ROOT, ausliefern unter /media/...
_media_dir = os.getenv("MEDIA_ROOT", str(Path(__file__).resolve().parent / "media"))
Path(_media_dir).mkdir(parents=True, exist_ok=True)
app.mount("/media", StaticFiles(directory=_media_dir), name="media")

if __name__ == "__main__":
    import uvicorn
    uvicorn.run(
        "main:app",
        host="0.0.0.0",
        port=8000,
        reload=True
    )