feat: implement calendar management features including create, update, and delete functionalities

components/calendar/calendar-sidebar-panel.tsx

@@ -1,21 +1,49 @@
 "use client";
 
+import { useState, useRef, useEffect } from "react";
 import { useTranslations } from "next-intl";
+import { Globe } from "lucide-react";
 import { cn } from "@/lib/utils";
 import type { Calendar } from "@/lib/jmap/types";
+import { CalendarColorPicker } from "@/components/settings/calendar-management-settings";
+import { useCalendarStore } from "@/stores/calendar-store";
 
 interface CalendarSidebarPanelProps {
   calendars: Calendar[];
   selectedCalendarIds: string[];
   onToggleVisibility: (id: string) => void;
+  onColorChange?: (calendarId: string, color: string) => void;
 }
 
 export function CalendarSidebarPanel({
   calendars,
   selectedCalendarIds,
   onToggleVisibility,
+  onColorChange,
 }: CalendarSidebarPanelProps) {
   const t = useTranslations("calendar");
+  const isSubscriptionCalendar = useCalendarStore((s) => s.isSubscriptionCalendar);
+
+  const [colorPickerId, setColorPickerId] = useState<string | null>(null);
+  const colorPickerRef = useRef<HTMLDivElement>(null);
+
+  useEffect(() => {
+    if (!colorPickerId) return;
+    const handleClick = (e: MouseEvent) => {
+      if (colorPickerRef.current && !colorPickerRef.current.contains(e.target as Node)) {
+        setColorPickerId(null);
+      }
+    };
+    const handleKey = (e: KeyboardEvent) => {
+      if (e.key === 'Escape') setColorPickerId(null);
+    };
+    document.addEventListener('mousedown', handleClick);
+    document.addEventListener('keydown', handleKey);
+    return () => {
+      document.removeEventListener('mousedown', handleClick);
+      document.removeEventListener('keydown', handleKey);
+    };
+  }, [colorPickerId]);
 
   if (calendars.length === 0) return null;
 
@@ -30,25 +58,53 @@ export function CalendarSidebarPanel({
           const color = cal.color || "#3b82f6";
 
           return (
-            <button
-              key={cal.id}
-              onClick={() => onToggleVisibility(cal.id)}
-              className={cn(
-                "flex items-center gap-2 w-full px-1.5 py-1 rounded-md text-sm transition-colors duration-150",
-                "hover:bg-muted"
-              )}
-            >
-              <span
+            <div key={cal.id} className="relative">
+              <button
+                onClick={() => onToggleVisibility(cal.id)}
+                onContextMenu={(e) => {
+                  if (onColorChange) {
+                    e.preventDefault();
+                    setColorPickerId(colorPickerId === cal.id ? null : cal.id);
+                  }
+                }}
                 className={cn(
-                  "w-3 h-3 rounded-sm border-2 flex-shrink-0 transition-colors",
-                  isVisible ? "border-transparent" : "border-muted-foreground/40 bg-transparent"
+                  "flex items-center gap-2 w-full px-1.5 py-1 rounded-md text-sm transition-colors duration-150",
+                  "hover:bg-muted"
                 )}
-                style={isVisible ? { backgroundColor: color, borderColor: color } : undefined}
-              />
-              <span className={cn("truncate", !isVisible && "text-muted-foreground")}>
-                {cal.name}
-              </span>
-            </button>
+              >
+                <span
+                  className={cn(
+                    "w-3 h-3 rounded-sm border-2 flex-shrink-0 transition-colors",
+                    isVisible ? "border-transparent" : "border-muted-foreground/40 bg-transparent"
+                  )}
+                  style={isVisible ? { backgroundColor: color, borderColor: color } : undefined}
+                />
+                <span className={cn("truncate", !isVisible && "text-muted-foreground")}>
+                  {cal.name}
+                </span>
+                {isSubscriptionCalendar(cal.id) && (
+                  <Globe className="w-3 h-3 text-muted-foreground flex-shrink-0" />
+                )}
+              </button>
+
+              {/* Color picker popover on right-click */}
+              {colorPickerId === cal.id && onColorChange && (
+                <div
+                  ref={colorPickerRef}
+                  className="absolute left-6 top-full mt-1 z-50 bg-background border border-border rounded-lg shadow-lg p-3 w-56"
+                >
+                  <p className="text-xs font-medium text-muted-foreground mb-2">{t("management.change_color")}</p>
+                  <CalendarColorPicker
+                    value={color}
+                    onChange={(c) => {
+                      onColorChange(cal.id, c);
+                      setColorPickerId(null);
+                    }}
+                    allowCustom
+                  />
+                </div>
+              )}
+            </div>
           );
         })}
       </div>

components/calendar/event-card.tsx

@@ -30,7 +30,8 @@ function getEventColor(event: CalendarEvent, calendar?: Calendar): string {
   return sanitizeColor(event.color, sanitizeColor(calendar?.color));
 }
 
-function parseDuration(duration: string): number {
+function parseDuration(duration: string | undefined): number {
+  if (!duration) return 0;
   let totalMinutes = 0;
   const weekMatch = duration.match(/(\d+)W/);
   const hourMatch = duration.match(/(\d+)H/);

components/calendar/ical-import-modal.tsx

@@ -3,7 +3,7 @@
 import { useState, useCallback, useRef, useEffect } from "react";
 import { useTranslations } from "next-intl";
 import { Button } from "@/components/ui/button";
-import { X, Upload, Check, Loader2, RefreshCw } from "lucide-react";
+import { X, Upload, Check, Loader2, RefreshCw, Globe } from "lucide-react";
 import { format, parseISO } from "date-fns";
 import type { CalendarEvent, Calendar } from "@/lib/jmap/types";
 import type { JMAPClient } from "@/lib/jmap/client";
@@ -20,6 +20,7 @@ const MAX_FILE_SIZE = 5 * 1024 * 1024; // 5MB
 const ACCEPTED_EXTENSIONS = [".ics", ".ical"];
 
 type ImportStep = "select" | "preview" | "importing";
+type ImportMode = "file" | "url";
 
 export function ICalImportModal({ calendars, client, onClose }: ICalImportModalProps) {
   const t = useTranslations("calendar.import");
@@ -38,6 +39,9 @@ export function ICalImportModal({ calendars, client, onClose }: ICalImportModalP
   const [isParsing, setIsParsing] = useState(false);
   const [isDragging, setIsDragging] = useState(false);
   const [error, setError] = useState<string | null>(null);
+  const [importMode, setImportMode] = useState<ImportMode>("file");
+  const [urlInput, setUrlInput] = useState("");
+  const [isFetchingUrl, setIsFetchingUrl] = useState(false);
   const fileInputRef = useRef<HTMLInputElement>(null);
   const modalRef = useRef<HTMLDivElement>(null);
 
@@ -103,6 +107,57 @@ export function ICalImportModal({ calendars, client, onClose }: ICalImportModalP
     if (file) handleFile(file);
   }, [handleFile]);
 
+  const handleUrlFetch = useCallback(async () => {
+    const trimmed = urlInput.trim();
+    if (!trimmed) return;
+
+    try {
+      new URL(trimmed);
+    } catch {
+      setError(t("invalid_url"));
+      return;
+    }
+
+    setError(null);
+    setIsFetchingUrl(true);
+    setIsParsing(true);
+
+    try {
+      const response = await fetch("/api/fetch-ical", {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({ url: trimmed }),
+      });
+
+      if (!response.ok) {
+        const data = await response.json().catch(() => ({}));
+        throw new Error(data.error || t("url_fetch_failed"));
+      }
+
+      const blob = await response.blob();
+      const file = new File([blob], "calendar.ics", { type: "text/calendar" });
+      const uploaded = await client.uploadBlob(file);
+      const accountId = client.getCalendarsAccountId();
+      const events = await client.parseCalendarEvents(accountId, uploaded.blobId);
+
+      if (events.length === 0) {
+        setError(t("no_events"));
+        setIsFetchingUrl(false);
+        setIsParsing(false);
+        return;
+      }
+
+      setParsedEvents(events);
+      setSelectedIndices(new Set(events.map((_, i) => i)));
+      setStep("preview");
+    } catch (err) {
+      setError(err instanceof Error ? err.message : t("url_fetch_failed"));
+    } finally {
+      setIsFetchingUrl(false);
+      setIsParsing(false);
+    }
+  }, [urlInput, client, t]);
+
   const toggleEvent = useCallback((index: number) => {
     setSelectedIndices((prev) => {
       const next = new Set(prev);
@@ -202,29 +257,85 @@ export function ICalImportModal({ calendars, client, onClose }: ICalImportModalP
 
         <div className="px-6 py-4 space-y-4">
           {step === "select" && !isParsing && (
-            <div
-              onClick={() => fileInputRef.current?.click()}
-              onDragOver={handleDragOver}
-              onDragLeave={handleDragLeave}
-              onDrop={handleDrop}
-              className={`flex flex-col items-center justify-center border-2 border-dashed rounded-lg p-8 cursor-pointer transition-colors ${
-                isDragging
-                  ? "border-primary bg-primary/5"
-                  : "border-border hover:border-primary/50 hover:bg-muted/50"
-              }`}
-            >
-              <Upload className="w-8 h-8 text-muted-foreground mb-3" />
-              <p className="text-sm font-medium">{t("select_file")}</p>
-              <p className="text-xs text-muted-foreground mt-1">{t("drop_file")}</p>
-              <p className="text-xs text-muted-foreground mt-2">{t("supported_formats")}</p>
-              <input
-                ref={fileInputRef}
-                type="file"
-                accept=".ics,.ical"
-                onChange={handleFileChange}
-                className="hidden"
-              />
-            </div>
+            <>
+              <div className="flex border-b border-border mb-4">
+                <button
+                  onClick={() => { setImportMode("file"); setError(null); }}
+                  className={`flex items-center gap-1.5 px-4 py-2 text-sm font-medium border-b-2 transition-colors ${
+                    importMode === "file"
+                      ? "border-primary text-primary"
+                      : "border-transparent text-muted-foreground hover:text-foreground"
+                  }`}
+                >
+                  <Upload className="w-4 h-4" />
+                  {t("tab_file")}
+                </button>
+                <button
+                  onClick={() => { setImportMode("url"); setError(null); }}
+                  className={`flex items-center gap-1.5 px-4 py-2 text-sm font-medium border-b-2 transition-colors ${
+                    importMode === "url"
+                      ? "border-primary text-primary"
+                      : "border-transparent text-muted-foreground hover:text-foreground"
+                  }`}
+                >
+                  <Globe className="w-4 h-4" />
+                  {t("tab_url")}
+                </button>
+              </div>
+
+              {importMode === "file" && (
+                <div
+                  onClick={() => fileInputRef.current?.click()}
+                  onDragOver={handleDragOver}
+                  onDragLeave={handleDragLeave}
+                  onDrop={handleDrop}
+                  className={`flex flex-col items-center justify-center border-2 border-dashed rounded-lg p-8 cursor-pointer transition-colors ${
+                    isDragging
+                      ? "border-primary bg-primary/5"
+                      : "border-border hover:border-primary/50 hover:bg-muted/50"
+                  }`}
+                >
+                  <Upload className="w-8 h-8 text-muted-foreground mb-3" />
+                  <p className="text-sm font-medium">{t("select_file")}</p>
+                  <p className="text-xs text-muted-foreground mt-1">{t("drop_file")}</p>
+                  <p className="text-xs text-muted-foreground mt-2">{t("supported_formats")}</p>
+                  <input
+                    ref={fileInputRef}
+                    type="file"
+                    accept=".ics,.ical"
+                    onChange={handleFileChange}
+                    className="hidden"
+                  />
+                </div>
+              )}
+
+              {importMode === "url" && (
+                <div className="space-y-3">
+                  <p className="text-sm text-muted-foreground">{t("url_description")}</p>
+                  <div className="flex gap-2">
+                    <input
+                      type="url"
+                      value={urlInput}
+                      onChange={(e) => setUrlInput(e.target.value)}
+                      placeholder={t("url_placeholder")}
+                      className="flex-1 rounded-md border border-input bg-background px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-ring"
+                      onKeyDown={(e) => { if (e.key === "Enter") handleUrlFetch(); }}
+                    />
+                    <Button
+                      onClick={handleUrlFetch}
+                      disabled={!urlInput.trim() || isFetchingUrl}
+                    >
+                      {isFetchingUrl ? (
+                        <Loader2 className="w-4 h-4 animate-spin" />
+                      ) : (
+                        t("fetch")
+                      )}
+                    </Button>
+                  </div>
+                  <p className="text-xs text-muted-foreground">{t("url_hint")}</p>
+                </div>
+              )}
+            </>
           )}
 
           {isParsing && (

components/calendar/ical-subscription-modal.tsx

@@ -0,0 +1,200 @@
+"use client";
+
+import { useState, useRef, useEffect, useCallback } from "react";
+import { useTranslations } from "next-intl";
+import { Button } from "@/components/ui/button";
+import { X, Loader2, Globe } from "lucide-react";
+import type { JMAPClient } from "@/lib/jmap/client";
+import { useCalendarStore } from "@/stores/calendar-store";
+import { CalendarColorPicker } from "@/components/settings/calendar-management-settings";
+import { toast } from "@/stores/toast-store";
+
+interface ICalSubscriptionModalProps {
+  client: JMAPClient;
+  onClose: () => void;
+}
+
+export function ICalSubscriptionModal({ client, onClose }: ICalSubscriptionModalProps) {
+  const t = useTranslations("calendar.subscription");
+  const tCommon = useTranslations("common");
+  const addICalSubscription = useCalendarStore((s) => s.addICalSubscription);
+
+  const [url, setUrl] = useState("");
+  const [name, setName] = useState("");
+  const [color, setColor] = useState("#3b82f6");
+  const [refreshInterval, setRefreshInterval] = useState(60);
+  const [isSubmitting, setIsSubmitting] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const modalRef = useRef<HTMLDivElement>(null);
+
+  const isValid = url.trim().length > 0 && name.trim().length > 0;
+
+  const handleSubmit = useCallback(async () => {
+    const trimmedUrl = url.trim();
+    if (!trimmedUrl || !name.trim()) return;
+
+    try {
+      new URL(trimmedUrl);
+    } catch {
+      setError(t("invalid_url"));
+      return;
+    }
+
+    setError(null);
+    setIsSubmitting(true);
+
+    try {
+      const subscription = await addICalSubscription(client, trimmedUrl, name.trim(), color, refreshInterval);
+      if (subscription) {
+        toast.success(t("success", { name: name.trim() }));
+        onClose();
+      } else {
+        setError(t("error"));
+      }
+    } catch {
+      setError(t("error"));
+    } finally {
+      setIsSubmitting(false);
+    }
+  }, [url, name, color, refreshInterval, client, addICalSubscription, onClose, t]);
+
+  useEffect(() => {
+    const handleKey = (e: KeyboardEvent) => {
+      if (e.key === "Escape") onClose();
+    };
+    window.addEventListener("keydown", handleKey);
+    return () => window.removeEventListener("keydown", handleKey);
+  }, [onClose]);
+
+  useEffect(() => {
+    const modal = modalRef.current;
+    if (!modal) return;
+    const focusableEls = modal.querySelectorAll<HTMLElement>(
+      'input, select, textarea, button, [tabindex]:not([tabindex="-1"])'
+    );
+    const firstEl = focusableEls[0];
+    const lastEl = focusableEls[focusableEls.length - 1];
+
+    const handler = (e: KeyboardEvent) => {
+      if (e.key !== "Tab") return;
+      if (e.shiftKey && document.activeElement === firstEl) {
+        e.preventDefault();
+        lastEl?.focus();
+      } else if (!e.shiftKey && document.activeElement === lastEl) {
+        e.preventDefault();
+        firstEl?.focus();
+      }
+    };
+    modal.addEventListener("keydown", handler);
+    firstEl?.focus();
+    return () => modal.removeEventListener("keydown", handler);
+  }, []);
+
+  return (
+    <div className="fixed inset-0 z-50 flex items-center justify-center">
+      <div className="absolute inset-0 bg-black/50 backdrop-blur-[1px]" onClick={onClose} aria-hidden="true" />
+      <div
+        ref={modalRef}
+        role="dialog"
+        aria-modal="true"
+        aria-label={t("title")}
+        className="relative bg-background border border-border rounded-lg shadow-xl w-full max-w-md mx-4 animate-in zoom-in-95 duration-200"
+      >
+        <div className="flex items-center justify-between px-6 py-4 border-b border-border">
+          <div className="flex items-center gap-2">
+            <Globe className="w-5 h-5 text-primary" />
+            <h2 className="text-lg font-semibold">{t("title")}</h2>
+          </div>
+          <button
+            onClick={onClose}
+            className="p-1.5 rounded-md hover:bg-muted transition-colors duration-150 text-muted-foreground hover:text-foreground"
+            aria-label={tCommon("close")}
+          >
+            <X className="w-5 h-5" />
+          </button>
+        </div>
+
+        <div className="px-6 py-4 space-y-4">
+          <p className="text-sm text-muted-foreground">{t("description")}</p>
+
+          <div>
+            <label className="text-xs font-medium text-muted-foreground mb-1 block">
+              {t("url_label")}
+            </label>
+            <input
+              type="url"
+              value={url}
+              onChange={(e) => setUrl(e.target.value)}
+              placeholder={t("url_placeholder")}
+              className="w-full rounded-md border border-input bg-background px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-ring"
+              disabled={isSubmitting}
+              onKeyDown={(e) => { if (e.key === "Enter" && isValid) handleSubmit(); }}
+            />
+          </div>
+
+          <div>
+            <label className="text-xs font-medium text-muted-foreground mb-1 block">
+              {t("name_label")}
+            </label>
+            <input
+              type="text"
+              value={name}
+              onChange={(e) => setName(e.target.value)}
+              placeholder={t("name_placeholder")}
+              className="w-full rounded-md border border-input bg-background px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-ring"
+              disabled={isSubmitting}
+              onKeyDown={(e) => { if (e.key === "Enter" && isValid) handleSubmit(); }}
+            />
+          </div>
+
+          <div>
+            <label className="text-xs font-medium text-muted-foreground mb-1 block">
+              {t("color_label")}
+            </label>
+            <CalendarColorPicker value={color} onChange={setColor} allowCustom />
+          </div>
+
+          <div>
+            <label className="text-xs font-medium text-muted-foreground mb-1 block">
+              {t("refresh_interval")}
+            </label>
+            <select
+              value={refreshInterval}
+              onChange={(e) => setRefreshInterval(Number(e.target.value))}
+              className="w-full rounded-md border border-input bg-background px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-ring"
+              disabled={isSubmitting}
+            >
+              <option value={15}>{t("interval_15")}</option>
+              <option value={30}>{t("interval_30")}</option>
+              <option value={60}>{t("interval_60")}</option>
+              <option value={360}>{t("interval_360")}</option>
+              <option value={1440}>{t("interval_1440")}</option>
+            </select>
+          </div>
+
+          {error && (
+            <div className="text-sm text-red-600 dark:text-red-400 bg-red-50 dark:bg-red-950/30 rounded-md px-3 py-2">
+              {error}
+            </div>
+          )}
+        </div>
+
+        <div className="flex items-center justify-end gap-2 px-6 py-4 border-t border-border">
+          <Button variant="outline" onClick={onClose} disabled={isSubmitting}>
+            {tCommon("cancel")}
+          </Button>
+          <Button onClick={handleSubmit} disabled={!isValid || isSubmitting}>
+            {isSubmitting ? (
+              <>
+                <Loader2 className="w-4 h-4 animate-spin mr-2" />
+                {t("subscribing")}
+              </>
+            ) : (
+              t("subscribe")
+            )}
+          </Button>
+        </div>
+      </div>
+    </div>
+  );
+}