"use client";

import { useState, useEffect, useRef } from "react";
import { Card, Button, ModelSelectModal, ManualConfigModal } from "@/shared/components";
import Image from "next/image";

const CLOUD_URL = process.env.NEXT_PUBLIC_CLOUD_URL;

export default function DroidToolCard({
  tool,
  isExpanded,
  onToggle,
  baseUrl,
  hasActiveProviders,
  apiKeys,
  activeProviders,
  cloudEnabled,
  initialStatus,
}) {
  const [droidStatus, setDroidStatus] = useState(initialStatus || null);
  const [checkingDroid, setCheckingDroid] = useState(false);
  const [applying, setApplying] = useState(false);
  const [restoring, setRestoring] = useState(false);
  const [message, setMessage] = useState(null);
  const [selectedApiKey, setSelectedApiKey] = useState("");
  const [selectedModel, setSelectedModel] = useState("");
  const [modalOpen, setModalOpen] = useState(false);
  const [modelAliases, setModelAliases] = useState({});
  const [showManualConfigModal, setShowManualConfigModal] = useState(false);
  const [customBaseUrl, setCustomBaseUrl] = useState("");
  const hasInitializedModel = useRef(false);

  const getConfigStatus = () => {
    if (!droidStatus?.installed) return null;
    const currentConfig = droidStatus.settings?.customModels?.find(m => m.id === "custom:9Router-0");
    if (!currentConfig) return "not_configured";
    const localMatch = currentConfig.baseUrl?.includes("localhost") || currentConfig.baseUrl?.includes("127.0.0.1");
    const cloudMatch = cloudEnabled && CLOUD_URL && currentConfig.baseUrl?.startsWith(CLOUD_URL);
    const tunnelMatch = baseUrl && currentConfig.baseUrl?.startsWith(baseUrl);
    if (localMatch || cloudMatch || tunnelMatch) return "configured";
    return "other";
  };

  const configStatus = getConfigStatus();

  useEffect(() => {
    if (apiKeys?.length > 0 && !selectedApiKey) {
      setSelectedApiKey(apiKeys[0].key);
    }
  }, [apiKeys, selectedApiKey]);

  useEffect(() => {
    if (initialStatus) setDroidStatus(initialStatus);
  }, [initialStatus]);

  useEffect(() => {
    if (isExpanded && !droidStatus) {
      checkDroidStatus();
      fetchModelAliases();
    }
    if (isExpanded) fetchModelAliases();
  }, [isExpanded]);

  const fetchModelAliases = async () => {
    try {
      const res = await fetch("/api/models/alias");
      const data = await res.json();
      if (res.ok) setModelAliases(data.aliases || {});
    } catch (error) {
      console.log("Error fetching model aliases:", error);
    }
  };

  useEffect(() => {
    if (droidStatus?.installed && !hasInitializedModel.current) {
      hasInitializedModel.current = true;
      const customModel = droidStatus.settings?.customModels?.find(m => m.id === "custom:9Router-0");
      if (customModel) {
        if (customModel.model) setSelectedModel(customModel.model);
        if (customModel.apiKey && apiKeys?.some(k => k.key === customModel.apiKey)) {
          setSelectedApiKey(customModel.apiKey);
        }
      }
    }
  }, [droidStatus, apiKeys]);

  const checkDroidStatus = async () => {
    setCheckingDroid(true);
    try {
      const res = await fetch("/api/cli-tools/droid-settings");
      const data = await res.json();
      setDroidStatus(data);
    } catch (error) {
      setDroidStatus({ installed: false, error: error.message });
    } finally {
      setCheckingDroid(false);
    }
  };

  const getEffectiveBaseUrl = () => {
    const url = customBaseUrl || baseUrl;
    return url.endsWith("/v1") ? url : `${url}/v1`;
  };

  const getDisplayUrl = () => {
    const url = customBaseUrl || baseUrl;
    return url.endsWith("/v1") ? url : `${url}/v1`;
  };

  const handleApplySettings = async () => {
    setApplying(true);
    setMessage(null);
    try {
      const keyToUse = selectedApiKey?.trim() 
        || (apiKeys?.length > 0 ? apiKeys[0].key : null)
        || (!cloudEnabled ? "sk_9router" : null);

      const res = await fetch("/api/cli-tools/droid-settings", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ 
          baseUrl: getEffectiveBaseUrl(), 
          apiKey: keyToUse,
          model: selectedModel 
        }),
      });
      const data = await res.json();
      if (res.ok) {
        setMessage({ type: "success", text: "Settings applied successfully!" });
        checkDroidStatus();
      } else {
        setMessage({ type: "error", text: data.error || "Failed to apply settings" });
      }
    } catch (error) {
      setMessage({ type: "error", text: error.message });
    } finally {
      setApplying(false);
    }
  };

  const handleResetSettings = async () => {
    setRestoring(true);
    setMessage(null);
    try {
      const res = await fetch("/api/cli-tools/droid-settings", { method: "DELETE" });
      const data = await res.json();
      if (res.ok) {
        setMessage({ type: "success", text: "Settings reset successfully!" });
        setSelectedModel("");
        setSelectedApiKey("");
        checkDroidStatus();
      } else {
        setMessage({ type: "error", text: data.error || "Failed to reset settings" });
      }
    } catch (error) {
      setMessage({ type: "error", text: error.message });
    } finally {
      setRestoring(false);
    }
  };

  const handleModelSelect = (model) => {
    setSelectedModel(model.value);
    setModalOpen(false);
  };

  const getManualConfigs = () => {
    const keyToUse = (selectedApiKey && selectedApiKey.trim()) 
      ? selectedApiKey 
      : (!cloudEnabled ? "sk_9router" : "<API_KEY_FROM_DASHBOARD>");

    const settingsContent = {
      customModels: [
        {
          model: selectedModel || "provider/model-id",
          id: "custom:9Router-0",
          index: 0,
          baseUrl: getEffectiveBaseUrl(),
          apiKey: keyToUse,
          displayName: selectedModel || "provider/model-id",
          maxOutputTokens: 131072,
          noImageSupport: false,
          provider: "openai",
        },
      ],
    };

    const platform = typeof navigator !== "undefined" && navigator.platform;
    const isWindows = platform?.toLowerCase().includes("win");
    const settingsPath = isWindows 
      ? "%USERPROFILE%\\.factory\\settings.json"
      : "~/.factory/settings.json";

    return [
      {
        filename: settingsPath,
        content: JSON.stringify(settingsContent, null, 2),
      },
    ];
  };

  return (
    <Card padding="sm" className="overflow-hidden">
      <div className="flex items-center justify-between hover:cursor-pointer" onClick={onToggle}>
        <div className="flex items-center gap-3">
          <div className="size-8 flex items-center justify-center shrink-0">
            <Image src="/providers/droid.png" alt={tool.name} width={32} height={32} className="size-8 object-contain rounded-lg" sizes="32px" onError={(e) => { e.target.style.display = "none"; }} />
          </div>
          <div className="min-w-0">
            <div className="flex items-center gap-2">
              <h3 className="font-medium text-sm">{tool.name}</h3>
              {configStatus === "configured" && <span className="px-1.5 py-0.5 text-[10px] font-medium bg-green-500/10 text-green-600 dark:text-green-400 rounded-full">Connected</span>}
              {configStatus === "not_configured" && <span className="px-1.5 py-0.5 text-[10px] font-medium bg-yellow-500/10 text-yellow-600 dark:text-yellow-400 rounded-full">Not configured</span>}
              {configStatus === "other" && <span className="px-1.5 py-0.5 text-[10px] font-medium bg-blue-500/10 text-blue-600 dark:text-blue-400 rounded-full">Other</span>}
            </div>
            <p className="text-xs text-text-muted truncate">{tool.description}</p>
          </div>
        </div>
        <span className={`material-symbols-outlined text-text-muted text-[20px] transition-transform ${isExpanded ? "rotate-180" : ""}`}>expand_more</span>
      </div>

      {isExpanded && (
        <div className="mt-4 pt-4 border-t border-border flex flex-col gap-4">
          {checkingDroid && (
            <div className="flex items-center gap-2 text-text-muted">
              <span className="material-symbols-outlined animate-spin">progress_activity</span>
              <span>Checking Factory Droid CLI...</span>
            </div>
          )}

          {!checkingDroid && droidStatus && !droidStatus.installed && (
            <div className="flex items-center gap-3 p-4 bg-yellow-500/10 border border-yellow-500/30 rounded-lg">
              <span className="material-symbols-outlined text-yellow-500">warning</span>
              <div className="flex-1">
                <p className="font-medium text-yellow-600 dark:text-yellow-400">Factory Droid CLI not installed</p>
                <p className="text-sm text-text-muted">Please install Factory Droid CLI to use this feature.</p>
              </div>
            </div>
          )}

          {!checkingDroid && droidStatus?.installed && (
            <>
              <div className="flex flex-col gap-2">
                {/* Current Base URL */}
                {droidStatus?.settings?.customModels?.find(m => m.id === "custom:9Router-0")?.baseUrl && (
                  <div className="flex items-center gap-2">
                    <span className="w-32 shrink-0 text-sm font-semibold text-text-main text-right">Current</span>
                    <span className="material-symbols-outlined text-text-muted text-[14px]">arrow_forward</span>
                    <span className="flex-1 px-2 py-1.5 text-xs text-text-muted truncate">
                      {droidStatus.settings.customModels.find(m => m.id === "custom:9Router-0").baseUrl}
                    </span>
                  </div>
                )}

                {/* Base URL */}
                <div className="flex items-center gap-2">
                  <span className="w-32 shrink-0 text-sm font-semibold text-text-main text-right">Base URL</span>
                  <span className="material-symbols-outlined text-text-muted text-[14px]">arrow_forward</span>
                  <input 
                    type="text" 
                    value={getDisplayUrl()} 
                    onChange={(e) => setCustomBaseUrl(e.target.value)} 
                    placeholder="https://.../v1" 
                    className="flex-1 px-2 py-1.5 bg-surface rounded border border-border text-xs focus:outline-none focus:ring-1 focus:ring-primary/50" 
                  />
                  {customBaseUrl && customBaseUrl !== baseUrl && (
                    <button onClick={() => setCustomBaseUrl("")} className="p-1 text-text-muted hover:text-primary rounded transition-colors" title="Reset to default">
                      <span className="material-symbols-outlined text-[14px]">restart_alt</span>
                    </button>
                  )}
                </div>

                {/* API Key */}
                <div className="flex items-center gap-2">
                  <span className="w-32 shrink-0 text-sm font-semibold text-text-main text-right">API Key</span>
                  <span className="material-symbols-outlined text-text-muted text-[14px]">arrow_forward</span>
                  {apiKeys.length > 0 ? (
                    <select value={selectedApiKey} onChange={(e) => setSelectedApiKey(e.target.value)} className="flex-1 px-2 py-1.5 bg-surface rounded text-xs border border-border focus:outline-none focus:ring-1 focus:ring-primary/50">
                      {apiKeys.map((key) => <option key={key.id} value={key.key}>{key.key}</option>)}
                    </select>
                  ) : (
                    <span className="flex-1 text-xs text-text-muted px-2 py-1.5">
                      {cloudEnabled ? "No API keys - Create one in Keys page" : "sk_9router (default)"}
                    </span>
                  )}
                </div>

                {/* Model */}
                <div className="flex items-center gap-2">
                  <span className="w-32 shrink-0 text-sm font-semibold text-text-main text-right">Model</span>
                  <span className="material-symbols-outlined text-text-muted text-[14px]">arrow_forward</span>
                  <input type="text" value={selectedModel} onChange={(e) => setSelectedModel(e.target.value)} placeholder="provider/model-id" className="flex-1 px-2 py-1.5 bg-surface rounded border border-border text-xs focus:outline-none focus:ring-1 focus:ring-primary/50" />
                  <button onClick={() => setModalOpen(true)} disabled={!hasActiveProviders} className={`px-2 py-1.5 rounded border text-xs transition-colors shrink-0 whitespace-nowrap ${hasActiveProviders ? "bg-surface border-border text-text-main hover:border-primary cursor-pointer" : "opacity-50 cursor-not-allowed border-border"}`}>Select Model</button>
                  {selectedModel && <button onClick={() => setSelectedModel("")} className="p-1 text-text-muted hover:text-red-500 rounded transition-colors" title="Clear"><span className="material-symbols-outlined text-[14px]">close</span></button>}
                </div>
              </div>

              {message && (
                <div className={`flex items-center gap-2 px-2 py-1.5 rounded text-xs ${message.type === "success" ? "bg-green-500/10 text-green-600" : "bg-red-500/10 text-red-600"}`}>
                  <span className="material-symbols-outlined text-[14px]">{message.type === "success" ? "check_circle" : "error"}</span>
                  <span>{message.text}</span>
                </div>
              )}

              <div className="flex items-center gap-2">
                <Button variant="primary" size="sm" onClick={handleApplySettings} disabled={!selectedModel} loading={applying}>
                  <span className="material-symbols-outlined text-[14px] mr-1">save</span>Apply
                </Button>
                <Button variant="outline" size="sm" onClick={handleResetSettings} disabled={!droidStatus?.has9Router} loading={restoring}>
                  <span className="material-symbols-outlined text-[14px] mr-1">restore</span>Reset
                </Button>
                <Button variant="ghost" size="sm" onClick={() => setShowManualConfigModal(true)}>
                  <span className="material-symbols-outlined text-[14px] mr-1">content_copy</span>Manual Config
                </Button>
              </div>
            </>
          )}
        </div>
      )}

      <ModelSelectModal
        isOpen={modalOpen}
        onClose={() => setModalOpen(false)}
        onSelect={handleModelSelect}
        selectedModel={selectedModel}
        activeProviders={activeProviders}
        modelAliases={modelAliases}
        title="Select Model for Factory Droid"
      />

      <ManualConfigModal
        isOpen={showManualConfigModal}
        onClose={() => setShowManualConfigModal(false)}
        title="Factory Droid - Manual Configuration"
        configs={getManualConfigs()}
      />
    </Card>
  );
}