# from fastapi import FastAPI
# from qgis.core import QgsVectorLayer
# from qgis_bootstrap import start_qgis

# app = FastAPI()

# # Start QGIS headless
# qgs = start_qgis()

# @app.get("/")
# def root():
#     return {"status": "QGIS API Ready"}

# @app.get("/extent")
# def extent():
#     layer = QgsVectorLayer("data/exmpl.geojson", "jalan", "ogr")

#     if not layer.isValid():
#         return {"error": "Layer tidak valid"}

#     ext = layer.extent()
#     return {
#         "xmin": ext.xMinimum(),
#         "ymin": ext.yMinimum(),
#         "xmax": ext.xMaximum(),
#         "ymax": ext.yMaximum(),
#     }





from fastapi import FastAPI, BackgroundTasks
from qgis_bootstrap import start_qgis
# from cleansing_service import load_layer, cleansing_layer
from full_cleansing_service import load_layer, cleansing_layer

app = FastAPI()

qgs = start_qgis()

@app.get("/")
def root():
    return {"status": "QGIS Cleansing API Running"}

@app.get("/clean/{table_name}")
def clean_table(table_name: str):

    layer = load_layer(table_name)
    if not layer.isValid():
        return {"error": f"Table '{table_name}' tidak valid atau tidak ditemukan."}

    print(layer)
    result = cleansing_layer(layer)

    summary = result["summary"]

    return {
        "table": table_name,
        "summary": summary,
        "message": "Cleansing selesai"
    }



@app.post("/process/{table_name}")
def process_table(table_name: str, background: BackgroundTasks):
    background.add_task(run_clean_table, table_name)
    return {"status": "ACCEPTED", "table": table_name}


def run_clean_table(table_name: str):
    print(f"\n=== Mulai cleansing untuk tabel: {table_name} ===")

    layer = load_layer(table_name)
    if not layer.isValid():
        print(f"[ERROR] Table '{table_name}' tidak valid atau tidak ditemukan.")
        return

    print("[OK] Layer valid, mulai cleansing...")

    result = cleansing_layer(layer)

    summary = result["summary"]
    clean_layer = result["clean_layer"]

    print("\n=== RINGKASAN CLEANSING ===")
    for k, v in summary.items():
        print(f"{k}: {v}")

    # TODO: save back ke PostGIS
    # save_to_postgis(clean_layer, table_name)

    print(f"=== Cleansing selesai untuk tabel: {table_name} ===\n")