"use client";

import { cn } from "@/lib/utils";
import {
  LayoutGrid,
  Inbox,
  Users,
  Receipt,
  Globe,
  FileText,
  MessageCircle,
  Settings,
  HelpCircle,
  User,
  DollarSign,
  Key,
  Palette,
  Target,
  Megaphone,
  ClipboardList,
  Code2,
  Sparkles,
  Cog,
  GitBranch,
} from "lucide-react";
import { Button } from "@/components/ui/button";
import { Separator } from "@/components/ui/separator";
import Link from "next/link";
import { toast } from "sonner";

type NavSection = "home" | "ai-chat" | "docs" | "plan" | "design" | "tech" | "journey" | "settings";

const NAV_ITEMS = [
  { id: "plan" as NavSection, icon: ClipboardList, label: "Plan", href: "/project/{projectId}/plan" },
  { id: "docs" as NavSection, icon: FileText, label: "Docs", href: "/project/{projectId}/docs" },
  { id: "design" as NavSection, icon: Palette, label: "Design", href: "/project/{projectId}/design" },
  { id: "tech" as NavSection, icon: Cog, label: "Tech", href: "/project/{projectId}/tech" },
  { id: "journey" as NavSection, icon: GitBranch, label: "Journey", href: "/project/{projectId}/journey" },
];

interface LeftRailProps {
  activeSection: string;
  onSectionChange: (section: string) => void;
  projectName?: string;
  projectId?: string;
  workspace?: string;
}

export function LeftRail({ activeSection, onSectionChange, projectName, projectId, workspace = 'marks-account' }: LeftRailProps) {
  return (
    <div className="flex w-16 flex-col items-center border-r bg-card">
      {/* Vib'n Logo */}
      <Link href={`/${workspace}/projects`} className="flex h-14 w-16 items-center justify-center border-b">
        <img 
          src="/vibn-black-circle-logo.png" 
          alt="Vib'n" 
          className="h-10 w-10 cursor-pointer hover:opacity-80 transition-opacity"
        />
      </Link>

      <div className="w-full flex flex-col items-center">
      {/* Main Navigation Items */}
      <div className="flex flex-col gap-2 w-full items-center">
        {/* AI Chat - Always visible */}
        {projectName && projectId && (
          <Link
            href={`/${workspace}/project/${projectId}/v_ai_chat`}
            className={cn(
              "flex flex-col items-center gap-1 w-full py-2 px-2 transition-all relative",
              activeSection === "ai-chat"
                ? "text-primary bg-primary/5"
                : "text-muted-foreground hover:text-foreground hover:bg-accent"
            )}
            title="AI Chat"
          >
            <Sparkles className="h-5 w-5" />
            <span className="text-[10px] font-medium">AI Chat</span>
            {activeSection === "ai-chat" && (
              <div className="absolute left-0 top-1/2 -translate-y-1/2 h-10 w-1 bg-primary" />
            )}
          </Link>
        )}

        {/* Other Nav Items */}
        {NAV_ITEMS.map((item) => {
          if (!projectId) return null;
          const fullHref = `/${workspace}${item.href.replace('{projectId}', projectId)}`;
          return (
            <Link
              key={item.id}
              href={fullHref}
              onClick={() => onSectionChange(item.id)}
              className={cn(
                "flex flex-col items-center gap-1 w-full py-2 px-2 transition-all relative",
                activeSection === item.id
                  ? "text-primary bg-primary/5"
                  : "text-muted-foreground hover:text-foreground hover:bg-accent"
              )}
              title={item.label}
            >
              <item.icon className="h-5 w-5" />
              <span className="text-[10px] font-medium">{item.label}</span>
              {activeSection === item.id && (
                <div className="absolute left-0 top-1/2 -translate-y-1/2 h-10 w-1 bg-primary" />
              )}
            </Link>
          );
        })}
      </div>

      </div>

      {/* Bottom Items */}
      <div className="mt-auto flex flex-col gap-1 w-full items-center pb-4">
        <Separator className="w-8 mb-1" />
        
        <Link href={`/${workspace}/keys`}>
          <Button
            variant="ghost"
            size="icon"
            className="h-10 w-10"
            title="API Keys"
          >
            <Key className="h-5 w-5" />
          </Button>
        </Link>

        <Link href={`/${workspace}/connections`}>
          <Button
            variant="ghost"
            size="icon"
            className="h-10 w-10"
            title="Settings & Connections"
          >
            <Settings className="h-5 w-5" />
          </Button>
        </Link>

        <Button
          variant="ghost"
          size="icon"
          className="h-10 w-10"
          title="Help - Coming Soon"
          onClick={() => toast.info("Help Center - Coming Soon")}
        >
          <HelpCircle className="h-5 w-5" />
        </Button>

        <Button
          variant="ghost"
          size="icon"
          className="h-10 w-10 rounded-full"
          title="Profile - Coming Soon"
          onClick={() => toast.info("Profile Settings - Coming Soon")}
        >
          <div className="h-8 w-8 rounded-full bg-primary/10 flex items-center justify-center">
            <User className="h-4 w-4" />
          </div>
        </Button>
      </div>
    </div>
  );
}