import {
  INI_PANEL_ENTRIES,
  getIniPanelEntryByHref,
  getIniPanelEntryManifest,
} from "./entry-manifest.js";
import {
  createMachineSessionControlPageController,
} from "./control-page-controller.js";
import {
  renderMachineSessionControlView,
} from "./control-view-renderer.js";
import {
  controlPageStatusText,
  createControlPageRefreshState,
  refreshMachineSessionControlPage,
} from "./control-page-refresh-workflow.js";
import {
  createControlPageSessionLoadState,
  loadMachineSessionForControlPageWorkflow,
} from "./control-page-session-workflow.js";
import {
  createMachineSessionReadonlyStatus,
  createMachineSessionReadonlyStatusApiManifest,
  readMachineSessionReadonlyStatus,
} from "./readonly-status-api.js";
export {
  controlPageStatusText,
  createControlPageRefreshState,
  refreshMachineSessionControlPage,
} from "./control-page-refresh-workflow.js";
export {
  createControlPageSessionLoadState,
  loadMachineSessionForControlPageWorkflow,
} from "./control-page-session-workflow.js";
export {
  createMachineSessionReadonlyStatus,
  createMachineSessionReadonlyStatusApiManifest,
  readMachineSessionReadonlyStatus,
} from "./readonly-status-api.js";
export {
  INI_PANEL_ENTRIES,
  getIniPanelEntryByHref,
  getIniPanelEntryManifest,
} from "./entry-manifest.js";
export {
  createMachineSessionControlPageController,
} from "./control-page-controller.js";
export {
  renderMachineSessionControlView,
} from "./control-view-renderer.js";

export function getVisibleIniPanelEntries() {
  return getIniPanelEntryManifest();
}

export function createIniPanelLauncherLinkViewModel(entries = getVisibleIniPanelEntries()) {
  return entries.map(({ id, href, title }) => ({
    entryId: id,
    href,
    label: title,
  }));
}

export function createIniPanelLaunchApiSchema() {
  return {
    apiName: "ini-panel-launch",
    manifestVersion: 1,
    fields: [
      "apiName",
      "manifestVersion",
      "methods",
      "visibleEntries",
      "targetPages",
      "controlPageApiMethods",
      "persistenceCapabilities",
    ],
  };
}

export function isSupportedIniPanelLaunchApiManifest(manifest, schema = createIniPanelLaunchApiSchema()) {
  if (!manifest || typeof manifest !== "object") {
    return false;
  }
  if (manifest.apiName !== schema.apiName || manifest.manifestVersion !== schema.manifestVersion) {
    return false;
  }
  return schema.fields.every((fieldName) => Object.hasOwn(manifest, fieldName));
}

export function createControlPageBrowserApiSchema() {
  return {
    apiName: "ini-panel-control-page",
    manifestVersion: 1,
    fields: [
      "apiName",
      "manifestVersion",
      "methods",
      "contract",
      "readonlyStatusApiManifest",
    ],
  };
}

export function isSupportedIniPanelControlPageApiManifest(
  manifest,
  schema = createControlPageBrowserApiSchema(),
) {
  if (!manifest || typeof manifest !== "object") {
    return false;
  }
  if (manifest.apiName !== schema.apiName || manifest.manifestVersion !== schema.manifestVersion) {
    return false;
  }
  return schema.fields.every((fieldName) => Object.hasOwn(manifest, fieldName));
}

export function createIniPanelLaunchApiManifest(entries = getVisibleIniPanelEntries()) {
  const schema = createIniPanelLaunchApiSchema();
  return {
    apiName: schema.apiName,
    manifestVersion: schema.manifestVersion,
    methods: [
      "isSupportedLaunchApiManifest",
      "getLaunchApiSchema",
      "getLaunchApiManifest",
      "getShellIntegrationSchema",
      "getShellIntegrationManifest",
      "getLauncherLinks",
      "getControlPageApiMethods",
    ],
    visibleEntries: entries.map(({ id, href, title }) => ({
      id,
      href,
      title,
    })),
    targetPages: entries.map(({ id, href }) => ({
      entryId: id,
      href,
    })),
    controlPageApiMethods: createControlPageBrowserApiMethods(),
    persistenceCapabilities: [
      {
        id: "machine-files",
        label: "Machine text files",
        scope: "opfs",
      },
      {
        id: "session-snapshot",
        label: "Machine session snapshot",
        scope: "opfs",
      },
      {
        id: "readonly-status",
        label: "Read-only machine session status",
        scope: "control-page",
      },
    ],
  };
}

export function createIniPanelShellControlPageContract() {
  const readonlyStatusApiManifest = createMachineSessionReadonlyStatusApiManifest();
  return {
    methodNames: [
      "createController",
      "loadSessionState",
      "readStatus",
      "refresh",
      "renderView",
    ],
    readonlyStatusApiManifest,
    readonlyStatusApiMethodNames: Object.keys(readonlyStatusApiManifest.methods),
    readonlyStatusApiStatusFields: readonlyStatusApiManifest.statusFields,
    relatedControlPageMethods: readonlyStatusApiManifest.relatedControlPageMethods,
  };
}

export function createControlPageBrowserApiMethods() {
  return [
    "isSupportedControlPageApiManifest",
    "getControlPageApiSchema",
    "getControlPageApiManifest",
    "getControlPageApiMethods",
    "getControlPageContract",
    "getControlView",
    "getPanelApi",
    "loadControlPageSessionState",
    "readControlPageStatus",
    "refreshControlPage",
    "renderControlPage",
  ];
}

export function createControlPageBrowserApiManifest() {
  const schema = createControlPageBrowserApiSchema();
  const contract = createIniPanelShellControlPageContract();
  return {
    apiName: schema.apiName,
    manifestVersion: schema.manifestVersion,
    methods: createControlPageBrowserApiMethods(),
    contract,
    readonlyStatusApiManifest: contract.readonlyStatusApiManifest,
  };
}

export function createIniPanelShellIntegrationSchema() {
  return {
    apiName: "ini-panel-shell-integration",
    manifestVersion: 1,
    fields: [
      "apiName",
      "manifestVersion",
      "pages",
      "launcherLinks",
      "launchApiSchema",
      "launchApiManifest",
      "controlPageApiSchema",
      "controlPageApiManifest",
      "compatibility",
      "persistenceCapabilities",
    ],
  };
}

export function isSupportedIniPanelShellIntegrationManifest(
  manifest,
  schema = createIniPanelShellIntegrationSchema(),
) {
  if (!manifest || typeof manifest !== "object") {
    return false;
  }
  if (manifest.apiName !== schema.apiName || manifest.manifestVersion !== schema.manifestVersion) {
    return false;
  }
  return schema.fields.every((fieldName) => Object.hasOwn(manifest, fieldName));
}

export function createIniPanelShellIntegrationManifest(entries = getVisibleIniPanelEntries()) {
  const schema = createIniPanelShellIntegrationSchema();
  const launchApiSchema = createIniPanelLaunchApiSchema();
  const launchApiManifest = createIniPanelLaunchApiManifest(entries);
  const controlPageApiSchema = createControlPageBrowserApiSchema();
  const controlPageApiManifest = createControlPageBrowserApiManifest();
  return {
    apiName: schema.apiName,
    manifestVersion: schema.manifestVersion,
    pages: entries.map(({ id, href, title }) => ({
      id,
      href,
      title,
    })),
    launcherLinks: createIniPanelLauncherLinkViewModel(entries),
    launchApiSchema,
    launchApiManifest,
    controlPageApiSchema,
    controlPageApiManifest,
    compatibility: {
      launchApiManifest: isSupportedIniPanelLaunchApiManifest(launchApiManifest, launchApiSchema),
      controlPageApiManifest: isSupportedIniPanelControlPageApiManifest(
        controlPageApiManifest,
        controlPageApiSchema,
      ),
    },
    persistenceCapabilities: launchApiManifest.persistenceCapabilities,
  };
}

export function createIniPanelShellViewModel(entries = getVisibleIniPanelEntries()) {
  return {
    pages: entries.map(({ id, href, title }) => ({
      id,
      href,
      title,
    })),
    launcherLinks: createIniPanelLauncherLinkViewModel(entries),
    shellIntegrationSchema: createIniPanelShellIntegrationSchema(),
    shellIntegrationManifest: createIniPanelShellIntegrationManifest(entries),
    launchApiSchema: createIniPanelLaunchApiSchema(),
    launchApiManifest: createIniPanelLaunchApiManifest(entries),
    isSupportedShellIntegrationManifest: isSupportedIniPanelShellIntegrationManifest,
    controlPage: {
      browserApiSchema: createControlPageBrowserApiSchema(),
      browserApiManifest: createControlPageBrowserApiManifest(),
      browserApiMethods: createControlPageBrowserApiMethods(),
      contract: createIniPanelShellControlPageContract(),
      createController: createMachineSessionControlPageController,
      isSupportedBrowserApiManifest: isSupportedIniPanelControlPageApiManifest,
      loadSessionState: loadMachineSessionForControlPageWorkflow,
      readonlyStatusApiManifest: createMachineSessionReadonlyStatusApiManifest(),
      readStatus: readMachineSessionReadonlyStatus,
      refresh: refreshMachineSessionControlPage,
      renderView: renderMachineSessionControlView,
    },
  };
}