package main

import (
	"encoding/json"
	"net/http"

	"inou/lib"
)

func handleSlices(w http.ResponseWriter, r *http.Request) {
	ctx := getAccessContextOrFail(w, r)
	if ctx == nil {
		return
	}

	dossierID := r.URL.Query().Get("dossier")
	if dossierID == "" {
		dossierID = r.URL.Query().Get("token")
	}
	seriesID := r.URL.Query().Get("series")
	if dossierID == "" || seriesID == "" {
		http.Error(w, "dossier and series required", http.StatusBadRequest)
		return
	}

	// RBAC: Check read access to dossier
	if !requireDossierAccess(w, ctx, dossierID) {
		return
	}

	entries, err := lib.EntryChildrenByType(dossierID, seriesID, "slice")
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	slices := make([]map[string]interface{}, 0)

	for _, e := range entries {
		var data struct {
			SliceLocation    float64 `json:"slice_location"`
			SliceThickness   float64 `json:"slice_thickness"`
			Rows             int     `json:"rows"`
			Cols             int     `json:"cols"`
			WindowCenter     float64 `json:"window_center"`
			WindowWidth      float64 `json:"window_width"`
			WindowCenter2    float64 `json:"window_center_2"`
			WindowWidth2     float64 `json:"window_width_2"`
			PixelSpacingR    float64 `json:"pixel_spacing_row"`
			PixelSpacingC    float64 `json:"pixel_spacing_col"`
			PosX             float64 `json:"image_position_x"`
			PosY             float64 `json:"image_position_y"`
			PosZ             float64 `json:"image_position_z"`
			ImageOrientation string  `json:"image_orientation"`
		}
		json.Unmarshal([]byte(e.Data), &data)

		slice := map[string]interface{}{
			"id":                e.EntryID,
			"image_url":         "https://inou.com/image/" + e.EntryID,
			"instance_number":   e.Ordinal,
			"orientation":       e.Type,
			"slice_location":    data.SliceLocation,
			"slice_thickness":   data.SliceThickness,
			"rows":              data.Rows,
			"cols":              data.Cols,
			"window_center":     data.WindowCenter,
			"window_width":      data.WindowWidth,
			"window_center_2":   data.WindowCenter2,
			"window_width_2":    data.WindowWidth2,
			"pixel_spacing_row": data.PixelSpacingR,
			"pixel_spacing_col": data.PixelSpacingC,
			"pos_x":             data.PosX,
			"pos_y":             data.PosY,
			"pos_z":             data.PosZ,
			"image_orientation": data.ImageOrientation,
		}
		slices = append(slices, slice)
	}

	response := map[string]interface{}{
		"slices":            slices,
		"contact_sheet_url": "https://inou.com/contact-sheet.webp/" + seriesID + "?token=" + dossierID,
	}

	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(response)
}