bookhoard/internal/handlers/progress.go

package handlers

import (
	"bookmann/internal/database"
	"bookmann/internal/sync"
	"context"
	"net/http"
	"strconv"

	"github.com/google/uuid"
	"github.com/jackc/pgx/v5"
	"github.com/jackc/pgx/v5/pgtype"
	"github.com/labstack/echo/v4"
)

// GetUniversalProgress retrieves progress with all location references
func (h *Handler) GetUniversalProgress(c echo.Context) error {
	user := MustGetAuthenticatedUser(c)

	mediaItemID, err := uuid.Parse(c.Param("id"))
	if err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, "invalid media item ID")
	}

	progress, err := h.db.GetUniversalProgress(context.Background(), database.GetUniversalProgressParams{
		MediaItemID: pgtype.UUID{Bytes: mediaItemID, Valid: true},
		UserID:      pgtype.UUID{Bytes: user.ID.Bytes, Valid: true},
	})
	if err != nil {
		if err == pgx.ErrNoRows {
			return c.JSON(http.StatusOK, map[string]interface{}{
				"media_item_id": mediaItemID,
				"progress":      nil,
			})
		}
		return echo.NewHTTPError(http.StatusInternalServerError, "failed to get progress")
	}

	response := map[string]interface{}{
		"book_id":      progress.MediaItemID.Bytes,
		"format_group": progress.FormatGroup,
		"universal_progress": map[string]interface{}{
			"percentage": progress.Percentage.Float64,
		},
		"location_references": map[string]interface{}{
			"percentage":  progress.Percentage.Float64,
			"page":        int(progress.CurrentPage.Int32),
			"total_pages": int(progress.TotalPages.Int32),
		},
	}

	if progress.Epubcfi.Valid {
		response["location_references"].(map[string]interface{})["epubcfi"] = progress.Epubcfi.String
	}
	if progress.Chapter.Valid {
		response["location_references"].(map[string]interface{})["chapter"] = int(progress.Chapter.Int32)
	}
	if progress.ChapterProgress.Valid {
		response["location_references"].(map[string]interface{})["chapter_progress"] = progress.ChapterProgress.Float64
	}
	if progress.CharacterOffset.Valid {
		response["location_references"].(map[string]interface{})["character"] = int64(progress.CharacterOffset.Int64)
	}

	deviceSync := map[string]interface{}{}
	if progress.LastSyncDevice.Valid {
		deviceSync["device"] = progress.LastSyncDevice.String
	}
	if progress.LastSyncSource.Valid {
		deviceSync["source"] = progress.LastSyncSource.String
	}
	if progress.LastSyncTimestamp.Valid {
		deviceSync["last_sync"] = progress.LastSyncTimestamp.Time
	}
	if len(deviceSync) > 0 {
		response["device_sync"] = deviceSync
	}

	return c.JSON(http.StatusOK, response)
}

// UpdateUniversalProgress updates progress with automatic conversion
func (h *Handler) UpdateUniversalProgress(c echo.Context) error {
	user := MustGetAuthenticatedUser(c)

	mediaItemID, err := uuid.Parse(c.Param("id"))
	if err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, "invalid media item ID")
	}

	var req struct {
		Source   string `json:"source"`
		Location struct {
			Percentage *float64 `json:"percentage"`
			Page       *int     `json:"page"`
			TotalPages *int     `json:"total_pages"`
			Epubcfi    *string  `json:"epubcfi"`
			Character  *int64   `json:"character"`
			Chapter    *int     `json:"chapter"`
			ViewportY  *float64 `json:"viewport_y"`
		} `json:"location"`
		DeviceMetadata struct {
			DeviceType string `json:"device_type"`
			UserAgent  string `json:"user_agent"`
		} `json:"device_metadata"`
	}

	if err := c.Bind(&req); err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, "invalid request body")
	}

	mediaItem, err := h.db.GetMediaItem(context.Background(), pgtype.UUID{Bytes: mediaItemID, Valid: true})
	if err != nil {
		return echo.NewHTTPError(http.StatusNotFound, "media item not found")
	}

	percentage := 0.0
	if req.Location.Percentage != nil {
		percentage = *req.Location.Percentage
	} else if req.Location.Page != nil && req.Location.TotalPages != nil {
		percentage = sync.PageToPercentage(*req.Location.Page, *req.Location.TotalPages)
	}

	currentPage := 0
	totalPages := 200
	if req.Location.Page != nil {
		currentPage = *req.Location.Page
	}
	if req.Location.TotalPages != nil {
		totalPages = *req.Location.TotalPages
	}
	if mediaItem.PageCount.Valid && mediaItem.PageCount.Int32 > 0 {
		totalPages = int(mediaItem.PageCount.Int32)
	}

	var epubcfi pgtype.Text
	if req.Location.Epubcfi != nil {
		epubcfi = pgtype.Text{String: *req.Location.Epubcfi, Valid: true}
	}

	var chapter pgtype.Int4
	if req.Location.Chapter != nil {
		chapter = pgtype.Int4{Int32: int32(*req.Location.Chapter), Valid: true}
	}

	var viewportY pgtype.Float8
	if req.Location.ViewportY != nil {
		viewportY = pgtype.Float8{Float64: *req.Location.ViewportY, Valid: true}
	}

	var lastSyncDevice, lastSyncSource pgtype.Text
	if req.DeviceMetadata.DeviceType != "" {
		lastSyncDevice = pgtype.Text{String: req.DeviceMetadata.DeviceType, Valid: true}
		lastSyncSource = pgtype.Text{String: req.Source, Valid: true}
	}

	updated, err := h.db.UpdateUniversalProgress(context.Background(), database.UpdateUniversalProgressParams{
		MediaItemID:     pgtype.UUID{Bytes: mediaItemID, Valid: true},
		UserID:          pgtype.UUID{Bytes: user.ID.Bytes, Valid: true},
		Percentage:      pgtype.Float8{Float64: percentage, Valid: true},
		Epubcfi:         epubcfi,
		Chapter:         chapter,
		ChapterProgress: pgtype.Float8{Float64: percentage, Valid: true},
		ViewportY:       viewportY,
		LastSyncDevice:  lastSyncDevice,
		LastSyncSource:  lastSyncSource,
		CurrentPage:     pgtype.Int4{Int32: int32(currentPage), Valid: true},
		TotalPages:      pgtype.Int4{Int32: int32(totalPages), Valid: true},
	})
	if err != nil {
		return echo.NewHTTPError(http.StatusInternalServerError, "failed to update progress")
	}

	return c.JSON(http.StatusOK, map[string]interface{}{
		"sync_status":      "success",
		"progress_updated": true,
		"percentage":       percentage,
		"current_page":     currentPage,
		"total_pages":      totalPages,
		"last_read_at":     updated.LastReadAt.Time,
	})
}

// GetProgressHistory retrieves reading session history
func (h *Handler) GetProgressHistory(c echo.Context) error {
	user := MustGetAuthenticatedUser(c)

	mediaItemID, err := uuid.Parse(c.Param("id"))
	if err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, "invalid media item ID")
	}

	limit := 50
	if l := c.QueryParam("limit"); l != "" {
		if parsed, err := strconv.Atoi(l); err == nil && parsed > 0 && parsed <= 100 {
			limit = parsed
		}
	}

	history, err := h.db.GetReadingHistory(context.Background(), database.GetReadingHistoryParams{
		UserID:      pgtype.UUID{Bytes: user.ID.Bytes, Valid: true},
		MediaItemID: pgtype.UUID{Bytes: mediaItemID, Valid: true},
		Limit:       int32(limit),
	})
	if err != nil {
		return echo.NewHTTPError(http.StatusInternalServerError, "failed to get history")
	}

	return c.JSON(http.StatusOK, map[string]interface{}{
		"media_item_id": mediaItemID,
		"sessions":      history,
		"count":         len(history),
	})
}