public-api/pkg/api/handlers/times.go

package handlers

import (
	"encoding/json"
	"fmt"
	"math"
	"net/http"
	"net/url"
	"strconv"
	"strings"

	"git.itzana.me/strafesnet/go-grpc/bots"
	"git.itzana.me/strafesnet/go-grpc/times"
	"git.itzana.me/strafesnet/public-api/pkg/api/dto"
	"github.com/gin-gonic/gin"
	log "github.com/sirupsen/logrus"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/status"
)

// TimesHandler handles HTTP requests related to times.
type TimesHandler struct {
	*Handler
	client *http.Client
	url    string
}

// NewTimesHandler creates a new TimesHandler with the provided options.
func NewTimesHandler(httpClient *http.Client, storageUrl string, options ...HandlerOption) (*TimesHandler, error) {
	baseHandler, err := NewHandler(options...)
	if err != nil {
		return nil, err
	}
	return &TimesHandler{
		Handler: baseHandler,
		client:  httpClient,
		url:     storageUrl,
	}, nil
}

// @Summary Get time by ID
// @Description Get a specific time by its ID
// @Tags times
// @Produce json
// @Security ApiKeyAuth
// @Param id path int true "Time ID"
// @Success 200 {object} dto.Response[dto.TimeData]
// @Failure 404 {object} dto.Error "Time not found"
// @Failure default {object} dto.Error "General error response"
// @Router /time/{id} [get]
func (h *TimesHandler) Get(ctx *gin.Context) {
	// Extract time ID from path parameter
	id := ctx.Param("id")
	timeID, err := strconv.ParseInt(id, 10, 64)
	if err != nil {
		ctx.JSON(http.StatusBadRequest, dto.Error{
			Error: "Invalid time ID format",
		})
		return
	}

	// Call the gRPC service
	timeData, err := times.NewTimesServiceClient(h.dataClient).Get(ctx, &times.IdMessage{
		ID: timeID,
	})
	if err != nil {
		statusCode := http.StatusInternalServerError
		errorMessage := "Failed to get time"

		// Check if it's a "not found" error
		if status.Code(err) == codes.NotFound {
			statusCode = http.StatusNotFound
			errorMessage = "Time not found"
		}

		ctx.JSON(statusCode, dto.Error{
			Error: errorMessage,
		})
		log.WithError(err).Error(
			"Failed to get time",
		)
		return
	}

	// Convert gRPC TimeResponse object to dto.TimeData object
	var time dto.TimeData
	result := time.FromGRPC(timeData)

	// Return the time data
	ctx.JSON(http.StatusOK, dto.Response[dto.TimeData]{
		Data: *result,
	})
}

// @Summary List times
// @Description Get a list of times
// @Tags times
// @Produce json
// @Security ApiKeyAuth
// @Param page_size query int false "Page size (max 100)" default(10) minimum(1) maximum(100)
// @Param page_number query int false "Page number" default(1) minimum(1)
// @Param filter query dto.TimeFilter false "Time filter parameters"
// @Param sort_by query string false "Sort field (time ASC, time DESC, date ASC, date DESC)" Enums(0, 1, 2, 3) default(0)
// @Success 200 {object} dto.PagedTotalResponse[dto.TimeData]
// @Failure default {object} dto.Error "General error response"
// @Router /time [get]
func (h *TimesHandler) List(ctx *gin.Context) {
	// Extract and constrain pagination parameters
	query := struct {
		PageSize   int `form:"page_size,default=10" binding:"min=1,max=100"`
		PageNumber int `form:"page_number,default=1" binding:"min=1"`
		SortBy     int `form:"sort_by,default=0" binding:"min=0,max=3"`
	}{}
	if err := ctx.ShouldBindQuery(&query); err != nil {
		ctx.JSON(http.StatusBadRequest, dto.Error{
			Error: err.Error(),
		})
		return
	}

	// Get list filter
	var filter dto.TimeFilter
	if err := ctx.ShouldBindQuery(&filter); err != nil {
		ctx.JSON(http.StatusBadRequest, dto.Error{
			Error: err.Error(),
		})
		return
	}

	// Call the gRPC service
	timeList, err := times.NewTimesServiceClient(h.dataClient).List(ctx, &times.ListRequest{
		Sort: uint32(query.SortBy),
		Filter: &times.TimeFilter{
			UserID:  filter.UserID,
			MapID:   filter.MapID,
			ModeID:  filter.ModeID,
			StyleID: filter.StyleID,
			GameID:  filter.GameID,
		},
		Page: &times.Pagination{
			Size:   int32(query.PageSize),
			Number: int32(query.PageNumber),
		},
	})
	if err != nil {
		ctx.JSON(http.StatusInternalServerError, dto.Error{
			Error: "Failed to list times",
		})
		log.WithError(err).Error(
			"Failed to list times",
		)
		return
	}

	// Convert gRPC TimeResponse objects to dto.TimeData objects
	dtoTimes := make([]dto.TimeData, len(timeList.Times))
	for i, t := range timeList.Times {
		var time dto.TimeData
		dtoTimes[i] = *time.FromGRPC(t)
	}

	// Return the paged response
	ctx.JSON(http.StatusOK, dto.PagedTotalResponse[dto.TimeData]{
		Data: dtoTimes,
		Pagination: dto.PaginationWithTotal{
			Page:       query.PageNumber,
			PageSize:   query.PageSize,
			TotalItems: int(timeList.Total),
			TotalPages: int(math.Ceil(float64(timeList.Total) / float64(query.PageSize))),
		},
	})
}

// @Summary Get world records
// @Description Get a list of world records sorted by most recent
// @Description NOTE: World records are recalutated once every hour and this endpoint is not realtime
// @Tags times
// @Produce json
// @Security ApiKeyAuth
// @Param page_size query int false "Page size (max 100)" default(10) minimum(1) maximum(100)
// @Param page_number query int false "Page number" default(1) minimum(1)
// @Param filter query dto.TimeFilter false "Time filter parameters"
// @Success 200 {object} dto.PagedResponse[dto.TimeData]
// @Failure default {object} dto.Error "General error response"
// @Router /time/worldrecord [get]
func (h *TimesHandler) WrList(ctx *gin.Context) {
	// Extract and constrain pagination parameters
	query := struct {
		PageSize   int `form:"page_size,default=10" binding:"min=1,max=100"`
		PageNumber int `form:"page_number,default=1" binding:"min=1"`
	}{}
	if err := ctx.ShouldBindQuery(&query); err != nil {
		ctx.JSON(http.StatusBadRequest, dto.Error{
			Error: err.Error(),
		})
		return
	}

	// Get list filter
	var filter dto.TimeFilter
	if err := ctx.ShouldBindQuery(&filter); err != nil {
		ctx.JSON(http.StatusBadRequest, dto.Error{
			Error: err.Error(),
		})
		return
	}

	// Call the gRPC service
	timeList, err := times.NewTimesServiceClient(h.dataClient).ListWr(ctx, &times.WrListRequest{
		Filter: &times.TimeFilter{
			UserID:  filter.UserID,
			MapID:   filter.MapID,
			ModeID:  filter.ModeID,
			StyleID: filter.StyleID,
			GameID:  filter.GameID,
		},
		Page: &times.Pagination{
			Size:   int32(query.PageSize),
			Number: int32(query.PageNumber),
		},
	})
	if err != nil {
		ctx.JSON(http.StatusInternalServerError, dto.Error{
			Error: "Failed to list world records",
		})
		log.WithError(err).Error(
			"Failed to list world records",
		)
		return
	}

	// Convert gRPC TimeResponse objects to dto.TimeData objects
	dtoTimes := make([]dto.TimeData, len(timeList.Times))
	for i, t := range timeList.Times {
		var time dto.TimeData
		dtoTimes[i] = *time.FromGRPC(t)
	}

	// Return the paged response
	ctx.JSON(http.StatusOK, dto.PagedResponse[dto.TimeData]{
		Data: dtoTimes,
		Pagination: dto.Pagination{
			Page:     query.PageNumber,
			PageSize: query.PageSize,
		},
	})
}

// @Summary Get placement batch
// @Description Get placement information for multiple times
// @Description Invalid or not found time IDs are omitted in the response
// @Tags times
// @Produce json
// @Security ApiKeyAuth
// @Param ids query []int64 true "Comma-separated array of time IDs (25 Limit)"
// @Success 200 {object} dto.Response[[]dto.TimePlacement]
// @Failure 400 {object} dto.Error "Invalid request"
// @Failure default {object} dto.Error "General error response"
// @Router /time/placement [get]
func (h *TimesHandler) GetPlacements(ctx *gin.Context) {
	// Get the comma-separated IDs from query parameter
	idsParam := ctx.Query("ids")
	if idsParam == "" {
		ctx.JSON(http.StatusBadRequest, dto.Error{
			Error: "ids parameter is required",
		})
		return
	}

	// Split the comma-separated string and convert to int64 slice
	idStrings := strings.Split(idsParam, ",")
	var ids []int64

	for _, idStr := range idStrings {
		idStr = strings.TrimSpace(idStr)
		if idStr == "" {
			continue
		}

		id, err := strconv.ParseInt(idStr, 10, 64)
		if err != nil {
			ctx.JSON(http.StatusBadRequest, dto.Error{
				Error: fmt.Sprintf("Invalid ID format: %s", idStr),
			})
			return
		}
		ids = append(ids, id)
	}

	// Validate that we have at least one time ID
	if len(ids) == 0 {
		ctx.JSON(http.StatusBadRequest, dto.Error{
			Error: "At least one time ID is required",
		})
		return
	}

	// Ensure we don't have more than 25
	if len(ids) > 25 {
		ctx.JSON(http.StatusBadRequest, dto.Error{
			Error: "Maximum of 25 IDs allowed",
		})
		return
	}

	// Call the gRPC service
	rankList, err := times.NewTimesServiceClient(h.dataClient).RankBatch(ctx, &times.IdListMessage{
		ID: ids,
	})
	if err != nil {
		ctx.JSON(http.StatusInternalServerError, dto.Error{
			Error: "Failed to get rank data",
		})
		log.WithError(err).Error("Failed to get rank data")
		return
	}

	// Convert gRPC response to DTO format
	ranks := make([]dto.TimePlacement, len(rankList.Ranks))
	for i, rank := range rankList.Ranks {
		var timeRank dto.TimePlacement
		ranks[i] = *timeRank.FromGRPC(rank)
	}
	ctx.JSON(http.StatusOK, dto.Response[[]dto.TimePlacement]{
		Data: ranks,
	})
}

// @Summary Get bot download url by time ID
// @Description Get a download url for the bot replay of a time by its ID if it exists
// @Tags times
// @Produce json
// @Security ApiKeyAuth
// @Param id path int true "Time ID"
// @Success 200 {object} dto.Response[dto.BotDownloadUrl]
// @Failure 404 {object} dto.Error "Time does not have a Bot"
// @Failure default {object} dto.Error "General error response"
// @Router /time/{id}/download-url [get]
func (h *TimesHandler) GetDownloadUrl(ctx *gin.Context) {
	// Extract time ID from path parameter
	id := ctx.Param("id")
	timeID, err := strconv.ParseInt(id, 10, 64)
	if err != nil {
		ctx.JSON(http.StatusBadRequest, dto.Error{
			Error: "Invalid time ID format",
		})
		return
	}

	// Call the gRPC service
	timeData, err := times.NewTimesServiceClient(h.dataClient).Get(ctx, &times.IdMessage{
		ID: timeID,
	})
	if err != nil {
		statusCode := http.StatusInternalServerError
		errorMessage := "Failed to get time"

		// Check if it's a "not found" error
		if status.Code(err) == codes.NotFound {
			statusCode = http.StatusNotFound
			errorMessage = "Time not found"
		}

		ctx.JSON(statusCode, dto.Error{
			Error: errorMessage,
		})
		log.WithError(err).Error(
			"Failed to get time",
		)
		return
	}

	// check if bot exists
	if timeData.Bot == nil {
		statusCode := http.StatusNotFound
		errorMessage := "Time does not have a Bot"

		ctx.JSON(statusCode, dto.Error{
			Error: errorMessage,
		})
		log.Error("Time does not have a Bot")
		return
	}

	// Call the gRPC service
	botData, err := bots.NewBotsServiceClient(h.dataClient).Get(ctx, &bots.IdMessage{
		ID: timeData.Bot.ID,
	})
	if err != nil {
		statusCode := http.StatusInternalServerError
		errorMessage := "Failed to get bot"

		// Check if it's a "not found" error
		if status.Code(err) == codes.NotFound {
			statusCode = http.StatusNotFound
			errorMessage = "Bot not found"
		}

		ctx.JSON(statusCode, dto.Error{
			Error: errorMessage,
		})
		log.WithError(err).Error(
			"Failed to get bot",
		)
		return
	}

	// fetch download url from storage service
	// Build the full URL.
	fullURL, err := url.JoinPath(h.url, botData.FileID)
	if err != nil {
		statusCode := http.StatusInternalServerError
		errorMessage := "Error joining Url"

		ctx.JSON(statusCode, dto.Error{
			Error: errorMessage,
		})
		log.WithError(err).Error(
			"Error joining Url",
		)
		return
	}

	// Create the request with the supplied context so callers can cancel it.
	req, err := http.NewRequestWithContext(ctx, http.MethodGet, fullURL, nil)
	if err != nil {
		statusCode := http.StatusInternalServerError
		errorMessage := "Error creating http request to storage"

		ctx.JSON(statusCode, dto.Error{
			Error: errorMessage,
		})
		log.WithError(err).Error(
			"Error creating http request to storage",
		)
		return
	}

	// Send the request.
	resp, err := h.client.Do(req)
	if err != nil {
		statusCode := http.StatusInternalServerError
		errorMessage := "Storage http request failed"

		ctx.JSON(statusCode, dto.Error{
			Error: errorMessage,
		})
		log.WithError(err).Error(
			"Storage http request failed",
		)
		return
	}
	defer resp.Body.Close()

	// check status
	if resp.StatusCode != 200 {
		statusCode := http.StatusInternalServerError
		errorMessage := "Unexpected status"

		ctx.JSON(statusCode, dto.Error{
			Error: errorMessage,
		})
		log.Error("Unexpected status")
		return
	}

	type storageResp struct {
		ID      string `json:"ID"`
		Created int64  `json:"Created"`
		Url     string `json:"Url"`
	}
	// Decode the JSON body into the storageResp struct.
	var info storageResp
	if err := json.NewDecoder(resp.Body).Decode(&info); err != nil {
		statusCode := http.StatusInternalServerError
		errorMessage := "Error decoding json"

		ctx.JSON(statusCode, dto.Error{
			Error: errorMessage,
		})
		log.WithError(err).Error(
			"Error decoding json",
		)
		return
	}

	// Return the download url
	ctx.JSON(http.StatusOK, dto.Response[dto.BotDownloadUrl]{
		Data: dto.BotDownloadUrl{
			Url: info.Url,
		},
	})
}