package handlers

import (
	"net/http"

	"galaxy/gamemaster/internal/domain/operation"
	"galaxy/gamemaster/internal/service/adminforce"
)

// newForceNextTurnHandler returns the handler for
// `POST /api/v1/internal/runtimes/{game_id}/force-next-turn`. The
// request has no body; the handler delegates to
// `adminforce.Service.Handle` and encodes the resulting runtime
// record on success.
func newForceNextTurnHandler(deps Dependencies) http.HandlerFunc {
	logger := loggerFor(deps.Logger, "internal_rest.force_next_turn")
	return func(writer http.ResponseWriter, request *http.Request) {
		if deps.ForceNextTurn == nil {
			writeError(writer, http.StatusInternalServerError, errorCodeInternal, "force next turn service is not wired")
			return
		}

		gameID, ok := extractGameID(writer, request)
		if !ok {
			return
		}

		result, err := deps.ForceNextTurn.Handle(request.Context(), adminforce.Input{
			GameID:    gameID,
			OpSource:  resolveOpSource(request),
			SourceRef: requestSourceRef(request),
		})
		if err != nil {
			logger.ErrorContext(request.Context(), "force next turn service errored",
				"game_id", gameID,
				"err", err.Error(),
			)
			writeError(writer, http.StatusInternalServerError, errorCodeInternal, "force next turn service failed")
			return
		}

		if result.Outcome == operation.OutcomeFailure {
			writeFailure(writer, result.ErrorCode, result.ErrorMessage)
			return
		}

		writeJSON(writer, http.StatusOK, encodeRuntimeRecord(result.TurnGeneration.Record))
	}
}