package queryservice

import (
	"fmt"
	"net/http"
	"queryorchestration/internal/query"
	queryprocessor "queryorchestration/internal/queryProcessor"

	"github.com/google/uuid"
	"github.com/labstack/echo/v4"
)

func (s *Controllers) ListQueries(ctx echo.Context) error {
	filters := query.ListFilters{}

	queries, err := s.svc.Query.List(ctx.Request().Context(), filters)
	if err != nil {
		return echo.NewHTTPError(http.StatusNotFound, fmt.Sprintf("Unable to list query: %s", err))
	}

	outQueries, err := parseQueries(queries)
	if err != nil {
		return echo.NewHTTPError(http.StatusNotFound, fmt.Sprintf("Unable to list query: %s", err))
	}

	return ctx.JSON(http.StatusOK, ListQueries{
		Queries: outQueries,
	})
}

func (s *Controllers) GetQueryById(ctx echo.Context, id string) error {
	uid, err := uuid.Parse(id)
	if err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, "Invalid ID")
	}

	query, err := s.svc.Query.Get(ctx.Request().Context(), uid)
	if err != nil {
		return echo.NewHTTPError(http.StatusNotFound, fmt.Sprintf("Unable to get query: %s", err))
	}

	qt, err := parseQuery(query)
	if err != nil {
		return echo.NewHTTPError(http.StatusNotFound, fmt.Sprintf("Unable to get query: %s", err))
	}

	return ctx.JSON(http.StatusOK, qt)
}

func (s *Controllers) CreateQuery(ctx echo.Context) error {
	req := QueryCreate{}
	if err := ctx.Bind(&req); err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, err)
	}

	requiredQueryIDs := []uuid.UUID{}
	if req.RequiredQueries != nil {
		requiredQueryIDs := make([]uuid.UUID, len(*req.RequiredQueries))
		for index, id := range *req.RequiredQueries {
			parsedID, err := uuid.Parse(id)
			if err != nil {
				return echo.NewHTTPError(http.StatusBadRequest, "Invalid Required ID")
			}

			requiredQueryIDs[index] = parsedID
		}
	}

	qt, err := parseSpecQueryType(req.Type)
	if err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, "Invalid Query Type")
	}

	id, err := s.svc.Query.Create(ctx.Request().Context(), &queryprocessor.Create{
		Type:             qt,
		RequiredQueryIDs: requiredQueryIDs,
	})
	if err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("Unable to create query: %s", err))
	}

	return ctx.JSON(http.StatusCreated, IdMessage{
		Id: id.String(),
	})
}

func (s *Controllers) UpdateQuery(ctx echo.Context, id string) error {
	uid, err := uuid.Parse(id)
	if err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, "Invalid ID")
	}

	err = s.svc.Query.Update(ctx.Request().Context(), &queryprocessor.Update{
		ID: uid,
	})
	if err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("Unable to update query: %s", err))
	}

	return ctx.NoContent(http.StatusOK)
}

func (s *Controllers) DeprecateQuery(ctx echo.Context, id string) error {
	uid, err := uuid.Parse(id)
	if err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, "Invalid ID")
	}

	err = s.svc.Query.Deprecate(ctx.Request().Context(), uid)
	if err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("Unable to deprecate query: %s", err))
	}

	return ctx.NoContent(http.StatusOK)
}

func (s *Controllers) TestQuery(ctx echo.Context, id string) error {
	queryId, err := uuid.Parse(id)
	if err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, "Invalid Query ID")
	}
	req := QueryTestRequest{}
	if err := ctx.Bind(&req); err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, err)
	}
	docId, err := uuid.Parse(req.DocumentId)
	if err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, "Invalid Doc ID")
	}

	value, err := s.svc.Query.Test(ctx.Request().Context(), query.Test{
		QueryID:      queryId,
		QueryVersion: req.QueryVersion,
		DocumentID:   docId,
	})
	if err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("Unable to test query: %s", err))
	}

	return ctx.JSON(http.StatusOK, QueryTestResponse{
		Value: value,
	})
}