import { createElement, type ReactNode } from "react";
import type {
  WorkbenchContribution,
  WorkbenchHostDockEntry,
  WorkbenchHostExternalStateSource,
  WorkbenchFrame,
  WorkbenchHostLaunchRequest,
  WorkbenchHostLaunchResult,
  WorkbenchHostNodeHeaderContext,
  WorkbenchHostNodeDefinition
} from "@tutti-os/workbench-surface";
import { createMultiInstanceDockEntryOptions } from "@tutti-os/workbench-surface";
import type { BrowserNodeFeature } from "../core/feature.ts";
import type { BrowserNodeAutomationTargetMetadata } from "../core/types.ts";
import {
  BrowserNode,
  type BrowserNodeErrorRenderContext
} from "../react/BrowserNode.tsx";
import { BrowserNodeWorkbenchHeader } from "../react/BrowserNodeChrome.tsx";
import {
  resolveBrowserNodeInitialUrl,
  type BrowserNodeExternalState
} from "./browserNodeInitialUrl.ts";
import { createBrowserNodeWorkbenchCloseRequests } from "./browserNodeCloseRequests.ts";

export type {
  BrowserNodeExternalState,
  BrowserNodeOpenUrlActivationPayload
} from "./browserNodeInitialUrl.ts";

export interface CreateBrowserNodeDefinitionInput {
  automationTarget?: Omit<
    BrowserNodeAutomationTargetMetadata,
    "focused" | "selected" | "surfaceId" | "tabId"
  > | null;
  defaultUrl: string;
  dockIcon?: ReactNode;
  feature: BrowserNodeFeature;
  frame?: WorkbenchFrame;
  onNavigated?: (input: { nodeId: string; url: string }) => void;
  renderError?: (context: BrowserNodeErrorRenderContext) => ReactNode;
  renderTrafficLights?: (
    context: WorkbenchHostNodeHeaderContext<BrowserNodeExternalState>
  ) => ReactNode;
  typeId?: string;
}

export interface CreateBrowserDockEntryInput {
  dockIcon?: ReactNode;
  feature: BrowserNodeFeature;
  id?: string;
  order?: number;
  sectionId?: string;
  typeId?: string;
}

export interface CreateBrowserWorkbenchLaunchHandlerInput {
  browserInstancePrefix?: string;
  typeId?: string;
}

export interface CreateBrowserWorkbenchContributionInput {
  contributionId?: string;
  defaultUrl: string;
  dockEntry?: Omit<CreateBrowserDockEntryInput, "feature">;
  externalStateSource?: WorkbenchHostExternalStateSource<
    BrowserNodeExternalState | null,
    unknown
  >;
  feature: BrowserNodeFeature;
  launch?: CreateBrowserWorkbenchLaunchHandlerInput;
  node?: Omit<CreateBrowserNodeDefinitionInput, "defaultUrl" | "feature">;
  typeId?: string;
}

const defaultBrowserNodeFrame: WorkbenchFrame = {
  height: 560,
  width: 920,
  x: 220,
  y: 120
};

export const defaultBrowserNodeTypeId = "browser";

export function createBrowserNodeDefinition({
  automationTarget = null,
  defaultUrl,
  feature,
  frame = defaultBrowserNodeFrame,
  onNavigated,
  renderError,
  renderTrafficLights,
  typeId = defaultBrowserNodeTypeId
}: CreateBrowserNodeDefinitionInput): WorkbenchHostNodeDefinition<BrowserNodeExternalState> {
  return {
    frame,
    instance: {
      mode: "multi"
    },
    renderBody: (context) =>
      createElement(BrowserNode, {
        automationTarget: automationTarget
          ? {
              ...automationTarget,
              focused: context.isFocused
            }
          : null,
        defaultUrl: resolveBrowserNodeInitialUrl({
          activation: context.activation,
          defaultUrl,
          externalNodeState: context.externalNodeState,
          surfaceNodeId: context.node.id,
          tabsStore: feature.tabsStore
        }),
        feature,
        hidden: context.node.isMinimized,
        nodeId: context.node.id,
        renderError,
        onFocusRequest: context.isFocused ? undefined : () => context.focus(),
        onNavigated: onNavigated
          ? (url) =>
              onNavigated({
                nodeId: context.node.id,
                url
              })
          : undefined,
        showHeader: false,
        syncDefaultUrl: true,
        tabs: true
      }),
    renderHeader: (headerContext) =>
      createElement(BrowserNodeWorkbenchHeader, {
        defaultActions: renderTrafficLights
          ? renderTrafficLights(headerContext)
          : headerContext.defaultActions,
        defaultUrl: resolveBrowserNodeInitialUrl({
          activation: headerContext.activation,
          defaultUrl,
          externalNodeState: headerContext.externalNodeState,
          surfaceNodeId: headerContext.node.id,
          tabsStore: feature.tabsStore
        }),
        displayMode: headerContext.displayMode,
        dragHandleProps: headerContext.dragHandleProps,
        feature,
        nodeId: headerContext.node.id,
        ...createBrowserNodeWorkbenchCloseRequests(headerContext.windowActions),
        onFocusRequest: headerContext.isFocused
          ? undefined
          : () => headerContext.windowActions.focus()
      }),
    title: feature.i18n.t("title"),
    typeId,
    window: {
      closable: true,
      defaultOpen: false,
      header: {
        heightPx: 76,
        overflow: "visible"
      },
      minimizedDock: {
        capturePreview: ({ node }) =>
          feature.hostApi.capturePreview?.({
            nodeId: feature.tabsStore.getActiveNodeId(node.id)
          }) ?? null,
        kind: "snapshot"
      },
      minimizable: true,
      restoreOnLoad: true
    }
  };
}

export function createBrowserDockEntry(
  input: CreateBrowserDockEntryInput
): WorkbenchHostDockEntry {
  return {
    ...createMultiInstanceDockEntryOptions(undefined, {
      allowNewWindowInDockPopup: false
    }),
    capturePopupItemPreview: ({ node }) =>
      input.feature.hostApi.capturePreview?.({
        nodeId: input.feature.tabsStore.getActiveNodeId(node.id)
      }) ?? null,
    icon: input.dockIcon ?? null,
    id: input.id ?? defaultBrowserNodeTypeId,
    label: input.feature.i18n.t("dockLabel"),
    matchNode: (node) =>
      node.data.typeId === (input.typeId ?? defaultBrowserNodeTypeId),
    order: input.order,
    resolvePopupItem: ({ node }) => {
      const runtime = input.feature.runtimeStore.getNodeState(
        input.feature.tabsStore.getActiveNodeId(node.id)
      );
      const title = runtime.title?.trim() || node.title;
      const url = runtime.url?.trim() || node.data.instanceId;
      return {
        revision: `${title}\n${url}`,
        subtitle: url,
        title
      };
    },
    sectionId: input.sectionId,
    typeId: input.typeId ?? defaultBrowserNodeTypeId,
    visibility: "always"
  };
}

export function createBrowserDockIconImage(src: string): ReactNode {
  return createElement("img", {
    alt: "",
    "aria-hidden": "true",
    "data-browser-node-dock-icon": "true",
    draggable: false,
    src
  });
}

export function createBrowserWorkbenchLaunchHandler({
  browserInstancePrefix,
  typeId = defaultBrowserNodeTypeId
}: CreateBrowserWorkbenchLaunchHandlerInput = {}): (
  request: WorkbenchHostLaunchRequest
) => WorkbenchHostLaunchResult | null {
  let nextBrowserInstanceSequence = 1;
  const instancePrefix =
    browserInstancePrefix ?? globalThis.crypto?.randomUUID?.() ?? typeId;

  return (request) => {
    if (request.typeId !== typeId) {
      return null;
    }

    const instanceId = `${typeId}-${instancePrefix}-${nextBrowserInstanceSequence++}`;
    return {
      dockEntryId: request.dockEntryId ?? typeId,
      framePolicy: "cascade",
      instanceId,
      typeId
    };
  };
}

export function createBrowserWorkbenchContribution({
  contributionId,
  defaultUrl,
  dockEntry,
  externalStateSource,
  feature,
  launch,
  node,
  typeId = defaultBrowserNodeTypeId
}: CreateBrowserWorkbenchContributionInput): WorkbenchContribution {
  return {
    dockEntries: [
      createBrowserDockEntry({
        ...dockEntry,
        feature,
        typeId
      })
    ],
    externalStateSource,
    id: contributionId ?? typeId,
    nodes: [
      createBrowserNodeDefinition({
        ...node,
        defaultUrl,
        feature,
        typeId
      })
    ],
    onLaunchRequest: createBrowserWorkbenchLaunchHandler({
      ...launch,
      typeId
    })
  };
}