"""DeFi data routes via DefiLlama API."""

from fastapi import APIRouter, HTTPException, Query

import defi_service
from models import ApiResponse
from route_utils import safe

router = APIRouter(prefix="/api/v1/defi")


@router.get("/tvl/protocols", response_model=ApiResponse)
@safe
async def tvl_protocols() -> ApiResponse:
    """Get top DeFi protocols ranked by TVL."""
    data = await defi_service.get_top_protocols()
    return ApiResponse(data=data)


@router.get("/tvl/chains", response_model=ApiResponse)
@safe
async def tvl_chains() -> ApiResponse:
    """Get TVL rankings for all chains."""
    data = await defi_service.get_chain_tvls()
    return ApiResponse(data=data)


@router.get("/tvl/{protocol}", response_model=ApiResponse)
@safe
async def protocol_tvl(protocol: str) -> ApiResponse:
    """Get current TVL for a specific protocol slug."""
    tvl = await defi_service.get_protocol_tvl(protocol)
    if tvl is None:
        raise HTTPException(status_code=404, detail=f"Protocol '{protocol}' not found")
    return ApiResponse(data={"protocol": protocol, "tvl": tvl})


@router.get("/yields", response_model=ApiResponse)
@safe
async def yield_pools(
    chain: str | None = Query(default=None, description="Filter by chain name"),
    project: str | None = Query(default=None, description="Filter by project name"),
) -> ApiResponse:
    """Get top yield pools, optionally filtered by chain and/or project."""
    data = await defi_service.get_yield_pools(chain=chain, project=project)
    return ApiResponse(data=data)


@router.get("/stablecoins", response_model=ApiResponse)
@safe
async def stablecoins() -> ApiResponse:
    """Get top stablecoins by circulating supply."""
    data = await defi_service.get_stablecoins()
    return ApiResponse(data=data)


@router.get("/volumes/dexs", response_model=ApiResponse)
@safe
async def dex_volumes() -> ApiResponse:
    """Get DEX volume overview including top protocols."""
    data = await defi_service.get_dex_volumes()
    if data is None:
        raise HTTPException(
            status_code=502,
            detail="Failed to fetch DEX volume data from DefiLlama",
        )
    return ApiResponse(data=data)


@router.get("/fees", response_model=ApiResponse)
@safe
async def protocol_fees() -> ApiResponse:
    """Get protocol fees and revenue overview."""
    data = await defi_service.get_protocol_fees()
    return ApiResponse(data=data)