from fastapi import APIRouter, HTTPException

from .. import database as db, config

router = APIRouter(prefix="/api/campaigns", tags=["campaigns"])


@router.get("")
def list_campaigns():
    return db.list_campaigns()


@router.post("")
def create_campaign(body: dict):
    name = body.get("name", "").strip()
    if not name:
        raise HTTPException(400, "Name is required")
    desc = body.get("description", "").strip()
    return db.create_campaign(name, desc)


@router.get("/{campaign_id}")
def get_campaign(campaign_id: str):
    campaign = db.get_campaign(campaign_id)
    if not campaign:
        raise HTTPException(404, "Campaign not found")
    return campaign


@router.put("/{campaign_id}")
def update_campaign(campaign_id: str, body: dict):
    if not db.get_campaign(campaign_id):
        raise HTTPException(404, "Campaign not found")
    updated = db.update_campaign(
        campaign_id,
        name=body.get("name"),
        description=body.get("description"),
    )
    return updated


@router.delete("/{campaign_id}")
def delete_campaign(campaign_id: str):
    if not db.get_campaign(campaign_id):
        raise HTTPException(404, "Campaign not found")
    db.delete_campaign(campaign_id)
    return {"ok": True}


@router.get("/{campaign_id}/settings")
def get_campaign_settings(campaign_id: str):
    if not db.get_campaign(campaign_id):
        raise HTTPException(404, "Campaign not found")
    raw = db.get_campaign_settings(campaign_id)
    # return defaults for any missing keys
    merged = {**config.CAMPAIGN_SETTINGS, **raw}
    return merged


@router.post("/{campaign_id}/settings")
def update_campaign_settings(campaign_id: str, body: dict):
    if not db.get_campaign(campaign_id):
        raise HTTPException(404, "Campaign not found")
    clean = {k: str(v) for k, v in body.items() if k in config.CAMPAIGN_SETTINGS}
    db.update_campaign_settings(campaign_id, clean)
    raw = db.get_campaign_settings(campaign_id)
    merged = {**config.CAMPAIGN_SETTINGS, **raw}
    return merged