import { useCallback, useEffect, useState } from "react";
import { Icon } from "../components/icon";
import {
  createToolType,
  deleteToolType,
  listToolTypes,
  updateToolType,
  validateToolType,
  type CreateToolTypeRequest,
  type ReadinessProbe,
  type ToolType,
  type UpdateToolTypeRequest,
} from "../api/tool_types";
import {
  createToolConfig,
  deleteToolConfig,
  getToolConfigDefaults,
  listToolConfigs,
  updateToolConfig,
  type CreateToolConfigRequest,
  type ToolConfig,
} from "../api/tool_configs";
import {
  createConfigFolder,
  deleteConfigFolder,
  listConfigFolders,
  updateConfigFolder,
  type ConfigFolder,
  type CreateConfigFolderRequest,
  type UpdateConfigFolderRequest,
} from "../api/config_folders";

type Tab = "types" | "configs" | "folders";
type Status = "loading" | "ready" | "error";

export const ToolWorkshopPage = () => {
  const [activeTab, setActiveTab] = useState<Tab>("types");
  const [status, setStatus] = useState<Status>("loading");
  const [toolTypes, setToolTypes] = useState<ToolType[]>([]);
  const [configs, setConfigs] = useState<ToolConfig[]>([]);
  const [folders, setFolders] = useState<ConfigFolder[]>([]);

  // Tool Type state
  const [selectedToolType, setSelectedToolType] = useState<ToolType | null>(null);
  const [toolTypeForm, setToolTypeForm] = useState({
    name: "",
    display_name: "",
    description: "",
    category: "",
    interfaces: [] as string[],
    default_port: "",
    definition_type: "compose" as "compose" | "dockerfile",
    compose_template: "",
    dockerfile_template: "",
    readiness_command: "",
    readiness_timeout: "30",
    readiness_interval: "2",
    required_variables: "",
  });
  const [toolTypeError, setToolTypeError] = useState<string | null>(null);
  const [showToolTypeForm, setShowToolTypeForm] = useState(false);

  // Config state
  const [selectedConfig, setSelectedConfig] = useState<ToolConfig | null>(null);
  const [configForm, setConfigForm] = useState({
    tool_type_id: "",
    key: "",
    value: "",
    config_type: "env",
    file_path: "",
    port_override: "",
    start_command: "",
    working_directory: "",
    env_vars_json: "{}",
    volumes_json: "[]",
  });
  const [configError, setConfigError] = useState<string | null>(null);
  const [showConfigForm, setShowConfigForm] = useState(false);

  // Folder state
  const [selectedFolder, setSelectedFolder] = useState<ConfigFolder | null>(null);
  const [folderForm, setFolderForm] = useState({
    name: "",
    description: "",
    mount_path: "/home/user",
    files_json: "{}",
    is_active: true,
  });
  const [folderError, setFolderError] = useState<string | null>(null);
  const [showFolderForm, setShowFolderForm] = useState(false);

  const loadData = useCallback(async () => {
    setStatus("loading");
    try {
      const [types, cfgs, fldrs] = await Promise.all([
        listToolTypes(),
        listToolConfigs(),
        listConfigFolders(),
      ]);
      setToolTypes(types);
      setConfigs(cfgs);
      setFolders(fldrs);
      setStatus("ready");
    } catch {
      setStatus("error");
    }
  }, []);

  useEffect(() => {
    void loadData();
  }, [loadData]);

  // Tool Type handlers
  const openCreateToolType = () => {
    setToolTypeForm({
      name: "",
      display_name: "",
      description: "",
      category: "",
      interfaces: [],
      default_port: "",
      definition_type: "compose",
      compose_template: "",
      dockerfile_template: "",
      readiness_command: "",
      readiness_timeout: "30",
      readiness_interval: "2",
      required_variables: "",
    });
    setToolTypeError(null);
    setShowToolTypeForm(true);
    setSelectedToolType(null);
  };

  const openEditToolType = (toolType: ToolType) => {
    setToolTypeForm({
      name: toolType.name,
      display_name: toolType.display_name,
      description: toolType.description || "",
      category: toolType.category || "",
      interfaces: toolType.interfaces || [],
      default_port: toolType.default_port?.toString() || "",
      definition_type: toolType.definition_type || "compose",
      compose_template: toolType.compose_template || "",
      dockerfile_template: toolType.dockerfile_template || "",
      readiness_command: toolType.readiness_probe?.command || "",
      readiness_timeout: toolType.readiness_probe?.timeout?.toString() || "30",
      readiness_interval: toolType.readiness_probe?.interval?.toString() || "2",
      required_variables: toolType.required_variables?.join(", ") || "",
    });
    setToolTypeError(null);
    setShowToolTypeForm(true);
    setSelectedToolType(toolType);
  };

  const handleToolTypeSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    setToolTypeError(null);

    if (!toolTypeForm.name.trim() || !toolTypeForm.display_name.trim()) {
      setToolTypeError("Name and display name are required");
      return;
    }

    if (!toolTypeForm.default_port.trim() || isNaN(Number(toolTypeForm.default_port))) {
      setToolTypeError("Default port is required and must be a number");
      return;
    }

    const template = toolTypeForm.definition_type === "compose"
      ? toolTypeForm.compose_template
      : toolTypeForm.dockerfile_template;

    if (!template.trim()) {
      setToolTypeError(`${toolTypeForm.definition_type === "compose" ? "Compose" : "Dockerfile"} template is required`);
      return;
    }

    const variables = toolTypeForm.required_variables
      .split(",")
      .map((v) => v.trim())
      .filter((v) => v.length > 0);

    const readinessProbe: ReadinessProbe | undefined = toolTypeForm.readiness_command.trim()
      ? {
          command: toolTypeForm.readiness_command.trim(),
          timeout: parseInt(toolTypeForm.readiness_timeout) || 30,
          interval: parseInt(toolTypeForm.readiness_interval) || 2,
        }
      : undefined;

    try {
      if (selectedToolType) {
        const input: UpdateToolTypeRequest = {
          display_name: toolTypeForm.display_name.trim(),
          description: toolTypeForm.description.trim() || undefined,
          category: toolTypeForm.category.trim() || undefined,
          interfaces: toolTypeForm.interfaces.length > 0 ? toolTypeForm.interfaces : undefined,
          default_port: Number(toolTypeForm.default_port),
          definition_type: toolTypeForm.definition_type,
          compose_template: toolTypeForm.definition_type === "compose" ? template : undefined,
          dockerfile_template: toolTypeForm.definition_type === "dockerfile" ? template : undefined,
          readiness_probe: readinessProbe,
          required_variables: variables,
        };
        await updateToolType(selectedToolType.id, input);
      } else {
        const input: CreateToolTypeRequest = {
          name: toolTypeForm.name.trim(),
          display_name: toolTypeForm.display_name.trim(),
          description: toolTypeForm.description.trim() || undefined,
          category: toolTypeForm.category.trim() || undefined,
          interfaces: toolTypeForm.interfaces.length > 0 ? toolTypeForm.interfaces : undefined,
          default_port: Number(toolTypeForm.default_port),
          definition_type: toolTypeForm.definition_type,
          compose_template: toolTypeForm.definition_type === "compose" ? template : undefined,
          dockerfile_template: toolTypeForm.definition_type === "dockerfile" ? template : undefined,
          readiness_probe: readinessProbe,
          required_variables: variables,
        };
        await createToolType(input);
      }
      setShowToolTypeForm(false);
      setSelectedToolType(null);
      await loadData();
    } catch (err) {
      const axiosError = err as { response?: { data?: { detail?: string } } };
      setToolTypeError(axiosError?.response?.data?.detail || "Failed to save tool type");
    }
  };

  const handleDeleteToolType = async (id: string) => {
    if (!window.confirm("Delete this tool type? All associated configs will be removed.")) return;
    try {
      await deleteToolType(id);
      await loadData();
    } catch {
      alert("Failed to delete tool type");
    }
  };

  // Config handlers
  const openCreateConfig = () => {
    setConfigForm({
      tool_type_id: toolTypes[0]?.id || "",
      key: "",
      value: "",
      config_type: "env",
      file_path: "",
      port_override: "",
      start_command: "",
      working_directory: "",
      env_vars_json: "{}",
      volumes_json: "[]",
    });
    setConfigError(null);
    setShowConfigForm(true);
    setSelectedConfig(null);
  };

  const openEditConfig = (config: ToolConfig) => {
    setConfigForm({
      tool_type_id: config.tool_type_id,
      key: config.key,
      value: config.value,
      config_type: config.config_type,
      file_path: config.file_path || "",
      port_override: config.port_override?.toString() || "",
      start_command: config.start_command || "",
      working_directory: config.working_directory || "",
      env_vars_json: config.environment_variables ? JSON.stringify(config.environment_variables, null, 2) : "{}",
      volumes_json: config.volumes ? JSON.stringify(config.volumes, null, 2) : "[]",
    });
    setConfigError(null);
    setShowConfigForm(true);
    setSelectedConfig(config);
  };

  const handleConfigSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    setConfigError(null);

    if (!configForm.tool_type_id || !configForm.key.trim()) {
      setConfigError("Tool type and key are required");
      return;
    }

    // Validate JSON fields
    let envVars: Record<string, string> | undefined;
    let volumes: Array<{ source: string; target: string; type?: string }> | undefined;

    try {
      if (configForm.env_vars_json.trim() && configForm.env_vars_json.trim() !== "{}") {
        envVars = JSON.parse(configForm.env_vars_json);
      }
    } catch {
      setConfigError("Environment variables must be valid JSON");
      return;
    }

    try {
      if (configForm.volumes_json.trim() && configForm.volumes_json.trim() !== "[]") {
        volumes = JSON.parse(configForm.volumes_json);
      }
    } catch {
      setConfigError("Volumes must be valid JSON array");
      return;
    }

    const data: CreateToolConfigRequest = {
      tool_type_id: configForm.tool_type_id,
      key: configForm.key.trim(),
      value: configForm.value,
      config_type: configForm.config_type,
      file_path: configForm.config_type === "file" ? configForm.file_path : undefined,
      port_override: configForm.port_override ? Number(configForm.port_override) : undefined,
      start_command: configForm.start_command.trim() || undefined,
      working_directory: configForm.working_directory.trim() || undefined,
      environment_variables: envVars,
      volumes,
    };

    try {
      if (selectedConfig) {
        await updateToolConfig(selectedConfig.id, data);
      } else {
        await createToolConfig(data);
      }
      setShowConfigForm(false);
      setSelectedConfig(null);
      await loadData();
    } catch (err) {
      const axiosError = err as { response?: { data?: { detail?: string } } };
      setConfigError(axiosError?.response?.data?.detail || "Failed to save config");
    }
  };

  const handleDeleteConfig = async (id: string) => {
    if (!window.confirm("Delete this config?")) return;
    try {
      await deleteToolConfig(id);
      await loadData();
    } catch {
      alert("Failed to delete config");
    }
  };

  // Folder handlers
  const openCreateFolder = () => {
    setFolderForm({
      name: "",
      description: "",
      mount_path: "/home/user",
      files_json: "{}",
      is_active: true,
    });
    setFolderError(null);
    setShowFolderForm(true);
    setSelectedFolder(null);
  };

  const openEditFolder = (folder: ConfigFolder) => {
    setFolderForm({
      name: folder.name,
      description: folder.description || "",
      mount_path: folder.mount_path,
      files_json: JSON.stringify(folder.files, null, 2),
      is_active: folder.is_active,
    });
    setFolderError(null);
    setShowFolderForm(true);
    setSelectedFolder(folder);
  };

  const handleFolderSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    setFolderError(null);

    if (!folderForm.name.trim() || !folderForm.mount_path.trim()) {
      setFolderError("Name and mount path are required");
      return;
    }

    let files: Record<string, string> | undefined;
    try {
      if (folderForm.files_json.trim() && folderForm.files_json.trim() !== "{}") {
        files = JSON.parse(folderForm.files_json);
      }
    } catch {
      setFolderError("Files must be valid JSON object");
      return;
    }

    const data: CreateConfigFolderRequest | UpdateConfigFolderRequest = {
      name: folderForm.name.trim(),
      description: folderForm.description.trim() || undefined,
      mount_path: folderForm.mount_path.trim(),
      files,
      is_active: folderForm.is_active,
    };

    try {
      if (selectedFolder) {
        await updateConfigFolder(selectedFolder.id, data);
      } else {
        await createConfigFolder(data as CreateConfigFolderRequest);
      }
      setShowFolderForm(false);
      setSelectedFolder(null);
      await loadData();
    } catch (err) {
      const axiosError = err as { response?: { data?: { detail?: string } } };
      setFolderError(axiosError?.response?.data?.detail || "Failed to save folder");
    }
  };

  const handleDeleteFolder = async (id: string) => {
    if (!window.confirm("Delete this config folder?")) return;
    try {
      await deleteConfigFolder(id);
      await loadData();
    } catch {
      alert("Failed to delete folder");
    }
  };

  if (status === "loading") {
    return (
      <div className="container">
        <p>Loading Tool Workshop...</p>
      </div>
    );
  }

  if (status === "error") {
    return (
      <div className="container">
        <p className="text-error">Failed to load Tool Workshop.</p>
        <button onClick={loadData}>
          <Icon name="refresh" size="sm" /> Retry
        </button>
      </div>
    );
  }

  return (
    <div className="container">
      <div style={{ display: "flex", justifyContent: "space-between", alignItems: "center", marginBottom: "1rem" }}>
        <h1>Tool Workshop</h1>
      </div>

      {/* Tabs */}
      <div className="tabs" style={{ display: "flex", gap: "0.5rem", marginBottom: "1rem", borderBottom: "1px solid var(--color-border)" }}>
        {(["types", "configs", "folders"] as Tab[]).map((tab) => (
          <button
            key={tab}
            onClick={() => setActiveTab(tab)}
            className={activeTab === tab ? "tab-active" : "tab"}
            style={{
              padding: "0.5rem 1rem",
              borderBottom: activeTab === tab ? "2px solid var(--color-primary)" : "2px solid transparent",
              background: "none",
              border: "none",
              cursor: "pointer",
              fontWeight: activeTab === tab ? 600 : 400,
            }}
          >
            {tab === "types" && <><Icon name="code" size="sm" /> Tool Types</>}
            {tab === "configs" && <><Icon name="settings" size="sm" /> Configs</>}
            {tab === "folders" && <><Icon name="folder" size="sm" /> Config Folders</>}
          </button>
        ))}
      </div>

      {/* Tool Types Tab */}
      {activeTab === "types" && (
        <div>
          <div style={{ display: "flex", justifyContent: "space-between", alignItems: "center", marginBottom: "1rem" }}>
            <h2>Tool Types</h2>
            <button onClick={openCreateToolType}>
              <Icon name="add" size="sm" /> Create Tool Type
            </button>
          </div>

          {showToolTypeForm && (
            <div className="card stack" style={{ marginBottom: "1rem" }}>
              <h3>{selectedToolType ? "Edit" : "Create"} Tool Type</h3>
              <form onSubmit={handleToolTypeSubmit} className="stack">
                <div className="form-group">
                  <label htmlFor="definition-type">Definition Type</label>
                  <select
                    id="definition-type"
                    value={toolTypeForm.definition_type}
                    onChange={(e) => setToolTypeForm({ ...toolTypeForm, definition_type: e.target.value as "compose" | "dockerfile" })}
                    className="form-input"
                  >
                    <option value="compose">Docker Compose</option>
                    <option value="dockerfile">Dockerfile</option>
                  </select>
                </div>

                <div className="form-group">
                  <label htmlFor="tool-type-name">Name *</label>
                  <input
                    id="tool-type-name"
                    type="text"
                    value={toolTypeForm.name}
                    onChange={(e) => setToolTypeForm({ ...toolTypeForm, name: e.target.value })}
                    disabled={!!selectedToolType}
                    placeholder="e.g., code-server"
                    className="form-input"
                    required
                  />
                </div>

                <div className="form-group">
                  <label htmlFor="tool-type-display-name">Display Name *</label>
                  <input
                    id="tool-type-display-name"
                    type="text"
                    value={toolTypeForm.display_name}
                    onChange={(e) => setToolTypeForm({ ...toolTypeForm, display_name: e.target.value })}
                    placeholder="e.g., VS Code Server"
                    className="form-input"
                    required
                  />
                </div>

                <div className="form-group">
                  <label htmlFor="tool-type-description">Description</label>
                  <input
                    id="tool-type-description"
                    type="text"
                    value={toolTypeForm.description}
                    onChange={(e) => setToolTypeForm({ ...toolTypeForm, description: e.target.value })}
                    placeholder="Optional description"
                    className="form-input"
                  />
                </div>

                <div className="form-group">
                  <label htmlFor="tool-type-category">Category</label>
                  <input
                    id="tool-type-category"
                    type="text"
                    value={toolTypeForm.category}
                    onChange={(e) => setToolTypeForm({ ...toolTypeForm, category: e.target.value })}
                    placeholder="e.g., editor, notebook, ai-assistant"
                    className="form-input"
                  />
                </div>

                <div className="form-group">
                  <label>Interfaces</label>
                  <div className="checkbox-group">
                    {["web", "terminal"].map((iface) => (
                      <label key={iface} className="checkbox-label">
                        <input
                          type="checkbox"
                          checked={toolTypeForm.interfaces.includes(iface)}
                          onChange={(e) => {
                            if (e.target.checked) {
                              setToolTypeForm({ ...toolTypeForm, interfaces: [...toolTypeForm.interfaces, iface] });
                            } else {
                              setToolTypeForm({ ...toolTypeForm, interfaces: toolTypeForm.interfaces.filter((i) => i !== iface) });
                            }
                          }}
                        />
                        {iface}
                      </label>
                    ))}
                  </div>
                </div>

                <div className="form-group">
                  <label htmlFor="tool-type-default-port">Default Port *</label>
                  <input
                    id="tool-type-default-port"
                    type="number"
                    value={toolTypeForm.default_port}
                    onChange={(e) => setToolTypeForm({ ...toolTypeForm, default_port: e.target.value })}
                    placeholder="e.g., 8443"
                    className="form-input"
                    required
                  />
                </div>

                <div className="form-group">
                  <label htmlFor="tool-type-template">{toolTypeForm.definition_type === "compose" ? "Compose Template" : "Dockerfile"} *</label>
                  <textarea
                    id="tool-type-template"
                    value={toolTypeForm.definition_type === "compose" ? toolTypeForm.compose_template : toolTypeForm.dockerfile_template}
                    onChange={(e) => {
                      if (toolTypeForm.definition_type === "compose") {
                        setToolTypeForm({ ...toolTypeForm, compose_template: e.target.value });
                      } else {
                        setToolTypeForm({ ...toolTypeForm, dockerfile_template: e.target.value });
                      }
                    }}
                    rows={10}
                    placeholder={toolTypeForm.definition_type === "compose" ? "version: '3.8'\nservices:\n  app:\n    image: ..." : "FROM node:18\nWORKDIR /app\n..."}
                    className="form-input"
                    required
                  />
                </div>

                <div className="form-group">
                  <label>Readiness Probe Command</label>
                  <input
                    type="text"
                    value={toolTypeForm.readiness_command}
                    onChange={(e) => setToolTypeForm({ ...toolTypeForm, readiness_command: e.target.value })}
                    placeholder="e.g., curl -f http://localhost:8080"
                    className="form-input"
                  />
                </div>

                <div className="row" style={{ gap: "1rem" }}>
                  <div className="form-group" style={{ flex: 1 }}>
                    <label>Timeout (seconds)</label>
                    <input
                      type="number"
                      value={toolTypeForm.readiness_timeout}
                      onChange={(e) => setToolTypeForm({ ...toolTypeForm, readiness_timeout: e.target.value })}
                      className="form-input"
                    />
                  </div>
                  <div className="form-group" style={{ flex: 1 }}>
                    <label>Interval (seconds)</label>
                    <input
                      type="number"
                      value={toolTypeForm.readiness_interval}
                      onChange={(e) => setToolTypeForm({ ...toolTypeForm, readiness_interval: e.target.value })}
                      className="form-input"
                    />
                  </div>
                </div>

                <div className="form-group">
                  <label>Required Variables (comma-separated)</label>
                  <input
                    type="text"
                    value={toolTypeForm.required_variables}
                    onChange={(e) => setToolTypeForm({ ...toolTypeForm, required_variables: e.target.value })}
                    placeholder="REPO_PATH, TOOL_NAME"
                    className="form-input"
                  />
                </div>

                {toolTypeError && <p className="text-error">{toolTypeError}</p>}

                <div className="dialog-actions">
                  <button type="submit">{selectedToolType ? "Update" : "Create"}</button>
                  <button type="button" onClick={() => setShowToolTypeForm(false)} className="button-secondary">Cancel</button>
                </div>
              </form>
            </div>
          )}

          <div className="card-grid">
            {toolTypes.map((toolType) => (
              <div key={toolType.id} className="card">
                <div className="card-header">
                  <h3>{toolType.display_name}</h3>
                  {toolType.is_builtin && <span className="badge">Built-in</span>}
                </div>
                <p className="text-secondary">{toolType.description || "No description"}</p>
                <div className="tool-type-meta">
                  <span>Type: {toolType.definition_type}</span>
                  <span>Port: {toolType.default_port || "N/A"}</span>
                  {toolType.interfaces?.length > 0 && (
                    <span>Interfaces: {toolType.interfaces.join(", ")}</span>
                  )}
                  {toolType.category && <span>Category: {toolType.category}</span>}
                  {toolType.readiness_probe && (
                    <span>Probe: {toolType.readiness_probe.command}</span>
                  )}
                </div>
                <div className="card-actions">
                  {!toolType.is_builtin && (
                    <>
                      <button onClick={() => openEditToolType(toolType)} className="button-secondary">
                        <Icon name="edit" size="sm" /> Edit
                      </button>
                      <button onClick={() => handleDeleteToolType(toolType.id)} className="button-danger">
                        <Icon name="delete" size="sm" /> Delete
                      </button>
                    </>
                  )}
                </div>
              </div>
            ))}
          </div>
        </div>
      )}

      {/* Configs Tab */}
      {activeTab === "configs" && (
        <div>
          <div style={{ display: "flex", justifyContent: "space-between", alignItems: "center", marginBottom: "1rem" }}>
            <h2>Tool Configurations</h2>
            <button onClick={openCreateConfig}>
              <Icon name="add" size="sm" /> Add Config
            </button>
          </div>

          {showConfigForm && (
            <div className="card stack" style={{ marginBottom: "1rem" }}>
              <h3>{selectedConfig ? "Edit" : "Add"} Config</h3>
              <form onSubmit={handleConfigSubmit} className="stack">
                <div className="form-group">
                  <label htmlFor="config-tool-type">Tool Type *</label>
                  <select
                    id="config-tool-type"
                    value={configForm.tool_type_id}
                    onChange={(e) => setConfigForm({ ...configForm, tool_type_id: e.target.value })}
                    className="form-input"
                    required
                  >
                    <option value="">Select a tool type...</option>
                    {toolTypes.map((tt) => (
                      <option key={tt.id} value={tt.id}>{tt.display_name}</option>
                    ))}
                  </select>
                </div>

                <div className="form-group">
                  <label htmlFor="config-key">Key *</label>
                  <input
                    id="config-key"
                    type="text"
                    value={configForm.key}
                    onChange={(e) => setConfigForm({ ...configForm, key: e.target.value })}
                    placeholder="e.g., OPENAI_API_KEY"
                    className="form-input"
                    required
                  />
                </div>

                <div className="form-group">
                  <label htmlFor="config-type">Config Type</label>
                  <select
                    id="config-type"
                    value={configForm.config_type}
                    onChange={(e) => setConfigForm({ ...configForm, config_type: e.target.value })}
                    className="form-input"
                  >
                    <option value="env">Environment Variable</option>
                    <option value="file">Configuration File</option>
                  </select>
                </div>

                {configForm.config_type === "file" && (
                  <div className="form-group">
                    <label>File Path</label>
                    <input
                      type="text"
                      value={configForm.file_path}
                      onChange={(e) => setConfigForm({ ...configForm, file_path: e.target.value })}
                      placeholder="e.g., /app/config.json"
                      className="form-input"
                    />
                  </div>
                )}

                <div className="form-group">
                  <label>Value</label>
                  <textarea
                    value={configForm.value}
                    onChange={(e) => setConfigForm({ ...configForm, value: e.target.value })}
                    placeholder={configForm.config_type === "env" ? "Enter value..." : "Enter file contents..."}
                    className="form-input"
                    rows={configForm.config_type === "file" ? 8 : 2}
                    required
                  />
                </div>

                <div className="row" style={{ gap: "1rem" }}>
                  <div className="form-group" style={{ flex: 1 }}>
                    <label>Port Override</label>
                    <input
                      type="number"
                      value={configForm.port_override}
                      onChange={(e) => setConfigForm({ ...configForm, port_override: e.target.value })}
                      placeholder="e.g., 8080"
                      className="form-input"
                    />
                  </div>
                  <div className="form-group" style={{ flex: 1 }}>
                    <label>Start Command</label>
                    <input
                      type="text"
                      value={configForm.start_command}
                      onChange={(e) => setConfigForm({ ...configForm, start_command: e.target.value })}
                      placeholder="e.g., npm start"
                      className="form-input"
                    />
                  </div>
                </div>

                <div className="form-group">
                  <label>Working Directory</label>
                  <input
                    type="text"
                    value={configForm.working_directory}
                    onChange={(e) => setConfigForm({ ...configForm, working_directory: e.target.value })}
                    placeholder="e.g., /workspace"
                    className="form-input"
                  />
                </div>

                <div className="form-group">
                  <label>Environment Variables (JSON)</label>
                  <textarea
                    value={configForm.env_vars_json}
                    onChange={(e) => setConfigForm({ ...configForm, env_vars_json: e.target.value })}
                    placeholder='{"KEY": "value"}'
                    className="form-input"
                    rows={4}
                  />
                </div>

                <div className="form-group">
                  <label>Volumes (JSON array)</label>
                  <textarea
                    value={configForm.volumes_json}
                    onChange={(e) => setConfigForm({ ...configForm, volumes_json: e.target.value })}
                    placeholder='[{"source": "/host", "target": "/container"}]'
                    className="form-input"
                    rows={4}
                  />
                </div>

                {configError && <p className="text-error">{configError}</p>}

                <div className="dialog-actions">
                  <button type="submit">{selectedConfig ? "Update" : "Add"}</button>
                  <button type="button" onClick={() => setShowConfigForm(false)} className="button-secondary">Cancel</button>
                </div>
              </form>
            </div>
          )}

          <div className="stack" style={{ gap: "0.5rem" }}>
            {configs.length === 0 ? (
              <p className="muted">No configurations yet.</p>
            ) : (
              configs.map((config) => (
                <div
                  key={config.id}
                  className="card"
                  style={{
                    display: "flex",
                    justifyContent: "space-between",
                    alignItems: "center",
                    padding: "0.75rem 1rem",
                  }}
                >
                  <div>
                    <div className="row" style={{ gap: "0.5rem", alignItems: "center" }}>
                      <code style={{ fontWeight: 600 }}>{config.key}</code>
                      <span
                        className="badge"
                        style={{
                          fontSize: "0.7rem",
                          textTransform: "uppercase",
                          background: config.config_type === "env" ? "var(--color-info)" : "var(--color-warning)",
                          color: "white",
                          padding: "0.125rem 0.5rem",
                          borderRadius: "9999px",
                        }}
                      >
                        {config.config_type}
                      </span>
                    </div>
                    <p className="muted" style={{ marginTop: "0.25rem", fontSize: "0.875rem" }}>
                      {config.config_type === "file" && config.file_path
                        ? `File: ${config.file_path}`
                        : "Environment variable"}
                      {config.port_override && ` · Port: ${config.port_override}`}
                    </p>
                  </div>
                  <div className="row" style={{ gap: "0.5rem" }}>
                    <button
                      className="ghost-button small"
                      onClick={() => openEditConfig(config)}
                      type="button"
                    >
                      <Icon name="edit" size="sm" />
                    </button>
                    <button
                      className="ghost-button small"
                      onClick={() => handleDeleteConfig(config.id)}
                      type="button"
                    >
                      <Icon name="delete" size="sm" />
                    </button>
                  </div>
                </div>
              ))
            )}
          </div>
        </div>
      )}

      {/* Config Folders Tab */}
      {activeTab === "folders" && (
        <div>
          <div style={{ display: "flex", justifyContent: "space-between", alignItems: "center", marginBottom: "1rem" }}>
            <h2>Config Folders</h2>
            <button onClick={openCreateFolder}>
              <Icon name="add" size="sm" /> Create Folder
            </button>
          </div>

          {showFolderForm && (
            <div className="card stack" style={{ marginBottom: "1rem" }}>
              <h3>{selectedFolder ? "Edit" : "Create"} Config Folder</h3>
              <form onSubmit={handleFolderSubmit} className="stack">
                <div className="form-group">
                  <label>Name *</label>
                  <input
                    type="text"
                    value={folderForm.name}
                    onChange={(e) => setFolderForm({ ...folderForm, name: e.target.value })}
                    placeholder="e.g., my-dotfiles"
                    className="form-input"
                    required
                  />
                </div>

                <div className="form-group">
                  <label>Description</label>
                  <input
                    type="text"
                    value={folderForm.description}
                    onChange={(e) => setFolderForm({ ...folderForm, description: e.target.value })}
                    placeholder="Optional description"
                    className="form-input"
                  />
                </div>

                <div className="form-group">
                  <label>Mount Path *</label>
                  <input
                    type="text"
                    value={folderForm.mount_path}
                    onChange={(e) => setFolderForm({ ...folderForm, mount_path: e.target.value })}
                    placeholder="e.g., /home/user"
                    className="form-input"
                    required
                  />
                </div>

                <div className="form-group">
                  <label>Files (JSON object)</label>
                  <textarea
                    value={folderForm.files_json}
                    onChange={(e) => setFolderForm({ ...folderForm, files_json: e.target.value })}
                    placeholder='{".zshrc": "export ZSH=...", ".gitconfig": "[user]\\nname = ..."}'
                    className="form-input"
                    rows={8}
                  />
                </div>

                <div className="form-group">
                  <label className="checkbox-label">
                    <input
                      type="checkbox"
                      checked={folderForm.is_active}
                      onChange={(e) => setFolderForm({ ...folderForm, is_active: e.target.checked })}
                    />
                    Active (mount into new instances)
                  </label>
                </div>

                {folderError && <p className="text-error">{folderError}</p>}

                <div className="dialog-actions">
                  <button type="submit">{selectedFolder ? "Update" : "Create"}</button>
                  <button type="button" onClick={() => setShowFolderForm(false)} className="button-secondary">Cancel</button>
                </div>
              </form>
            </div>
          )}

          <div className="card-grid">
            {folders.map((folder) => (
              <div key={folder.id} className="card">
                <div className="card-header">
                  <h3>{folder.name}</h3>
                  {folder.is_active && <span className="badge">Active</span>}
                </div>
                <p className="text-secondary">{folder.description || "No description"}</p>
                <div className="tool-type-meta">
                  <span>Mount: {folder.mount_path}</span>
                  <span>Files: {Object.keys(folder.files || {}).length}</span>
                </div>
                <div className="card-actions">
                  <button onClick={() => openEditFolder(folder)} className="button-secondary">
                    <Icon name="edit" size="sm" /> Edit
                  </button>
                  <button onClick={() => handleDeleteFolder(folder.id)} className="button-danger">
                    <Icon name="delete" size="sm" /> Delete
                  </button>
                </div>
              </div>
            ))}
          </div>
        </div>
      )}
    </div>
  );
};