import { useState } from "react";
import { Button } from "@/components/ui/button";
import { ConnectionSelector } from "@/components/connections/ConnectionSelector";
import { ConnectionList } from "@/components/connections/ConnectionList";
import { ConnectionDialog } from "@/components/connections/ConnectionDialog";
import { ReadOnlyToggle } from "@/components/layout/ReadOnlyToggle";
import { useAppStore } from "@/stores/app-store";
import { useConnections, useReconnect } from "@/hooks/use-connections";
import { toast } from "sonner";
import { Database, Plus, RefreshCw, Settings, Sparkles } from "lucide-react";
import type { ConnectionConfig, Tab } from "@/types";
import { getEnvironment } from "@/lib/environment";
import { AppSettingsSheet } from "@/components/settings/AppSettingsSheet";

export function Toolbar() {
  const [listOpen, setListOpen] = useState(false);
  const [dialogOpen, setDialogOpen] = useState(false);
  const [settingsOpen, setSettingsOpen] = useState(false);
  const [editingConn, setEditingConn] = useState<ConnectionConfig | null>(null);
  const { activeConnectionId, currentDatabase, addTab } = useAppStore();
  const { data: connections } = useConnections();
  const reconnectMutation = useReconnect();
  const activeConn = connections?.find((c) => c.id === activeConnectionId);
  const activeEnv = getEnvironment(activeConn?.environment);
  const activeColor = activeEnv?.color ?? activeConn?.color;

  const handleReconnect = () => {
    if (!activeConn) return;
    reconnectMutation.mutate(activeConn, {
      onSuccess: () => toast.success("Reconnected"),
      onError: (err) => toast.error("Reconnect failed", { description: String(err) }),
    });
  };

  const handleNewQuery = () => {
    if (!activeConnectionId) return;
    const tab: Tab = {
      id: crypto.randomUUID(),
      type: "query",
      title: "New Query",
      connectionId: activeConnectionId,
      database: currentDatabase ?? undefined,
      sql: "",
    };
    addTab(tab);
  };

  const handleNewChat = () => {
    if (!activeConnectionId) return;
    const tab: Tab = {
      id: crypto.randomUUID(),
      type: "chat",
      title: "Chat",
      connectionId: activeConnectionId,
      database: currentDatabase ?? undefined,
    };
    addTab(tab);
  };

  return (
    <>
      <div
        className="tusk-toolbar tusk-conn-strip flex h-10 items-center gap-1.5 px-3"
        style={{
          "--strip-width": activeColor ? "3px" : "0px",
          "--strip-color": activeColor ?? "transparent",
        } as React.CSSProperties}
      >
        <span
          className="tusk-wordmark select-none px-1 text-[12px] text-primary"
          style={{ textShadow: "0 0 10px oklch(0.808 0.124 82 / 35%)" }}
        >
          TUSK
        </span>

        <div className="mx-1 h-4 w-px bg-border" />

        <Button
          variant="ghost"
          size="xs"
          className="gap-1.5 text-muted-foreground hover:text-foreground"
          onClick={() => setListOpen(true)}
        >
          <Database className="h-3.5 w-3.5" />
          <span className="text-xs font-medium">Connections</span>
        </Button>

        <div className="mx-1 h-4 w-px bg-border" />

        <ConnectionSelector />

        <Button
          variant="ghost"
          size="icon-xs"
          onClick={handleReconnect}
          disabled={!activeConnectionId || reconnectMutation.isPending}
          title="Reconnect"
          className="text-muted-foreground hover:text-foreground"
        >
          <RefreshCw className={`h-3.5 w-3.5 ${reconnectMutation.isPending ? "animate-spin" : ""}`} />
        </Button>

        <div className="mx-1 h-4 w-px bg-border" />

        <ReadOnlyToggle />

        <div className="mx-1 h-4 w-px bg-border" />

        <Button
          variant="ghost"
          size="xs"
          className="gap-1.5 text-muted-foreground hover:text-foreground"
          onClick={handleNewChat}
          disabled={!activeConnectionId}
        >
          <Sparkles className="h-3.5 w-3.5" />
          <span className="text-xs font-medium">Ask AI</span>
        </Button>

        <Button
          variant="ghost"
          size="xs"
          className="gap-1.5 text-muted-foreground hover:text-foreground"
          onClick={handleNewQuery}
          disabled={!activeConnectionId}
        >
          <Plus className="h-3.5 w-3.5" />
          <span className="text-xs font-medium">New Query</span>
        </Button>

        <div className="flex-1" />

        <Button
          variant="ghost"
          size="icon-xs"
          onClick={() => setSettingsOpen(true)}
          title="Settings"
          className="text-muted-foreground hover:text-foreground"
        >
          <Settings className="h-3.5 w-3.5" />
        </Button>
      </div>

      <ConnectionList
        open={listOpen}
        onOpenChange={setListOpen}
        onEdit={(conn) => {
          setEditingConn(conn);
          setDialogOpen(true);
        }}
        onNew={() => {
          setEditingConn(null);
          setDialogOpen(true);
        }}
      />

      <ConnectionDialog
        open={dialogOpen}
        onOpenChange={setDialogOpen}
        connection={editingConn}
      />

      <AppSettingsSheet
        open={settingsOpen}
        onOpenChange={setSettingsOpen}
      />
    </>
  );
}