import { normalizeChatChannelId } from "../channels/registry.js";
import type { OpenClawConfig } from "../config/config.js";
import {
  BUNDLED_LEGACY_PLUGIN_ID_ALIASES,
  BUNDLED_PROVIDER_PLUGIN_ID_ALIASES,
} from "./bundled-capability-metadata.js";
import type { PluginRecord } from "./registry.js";
import { defaultSlotIdForKey } from "./slots.js";

export type NormalizedPluginsConfig = {
  enabled: boolean;
  allow: string[];
  deny: string[];
  loadPaths: string[];
  slots: {
    memory?: string | null;
  };
  entries: Record<
    string,
    {
      enabled?: boolean;
      hooks?: {
        allowPromptInjection?: boolean;
      };
      subagent?: {
        allowModelOverride?: boolean;
        allowedModels?: string[];
        hasAllowedModelsConfig?: boolean;
      };
      config?: unknown;
    }
  >;
};

export function normalizePluginId(id: string): string {
  const trimmed = id.trim();
  return (
    BUNDLED_LEGACY_PLUGIN_ID_ALIASES[trimmed] ??
    BUNDLED_PROVIDER_PLUGIN_ID_ALIASES[trimmed] ??
    trimmed
  );
}

const normalizeList = (value: unknown): string[] => {
  if (!Array.isArray(value)) {
    return [];
  }
  return value
    .map((entry) => (typeof entry === "string" ? normalizePluginId(entry) : ""))
    .filter(Boolean);
};

const normalizeSlotValue = (value: unknown): string | null | undefined => {
  if (typeof value !== "string") {
    return undefined;
  }
  const trimmed = value.trim();
  if (!trimmed) {
    return undefined;
  }
  if (trimmed.toLowerCase() === "none") {
    return null;
  }
  return trimmed;
};

const normalizePluginEntries = (entries: unknown): NormalizedPluginsConfig["entries"] => {
  if (!entries || typeof entries !== "object" || Array.isArray(entries)) {
    return {};
  }
  const normalized: NormalizedPluginsConfig["entries"] = {};
  for (const [key, value] of Object.entries(entries)) {
    const normalizedKey = normalizePluginId(key);
    if (!normalizedKey) {
      continue;
    }
    if (!value || typeof value !== "object" || Array.isArray(value)) {
      normalized[normalizedKey] = {};
      continue;
    }
    const entry = value as Record<string, unknown>;
    const hooksRaw = entry.hooks;
    const hooks =
      hooksRaw && typeof hooksRaw === "object" && !Array.isArray(hooksRaw)
        ? {
            allowPromptInjection: (hooksRaw as { allowPromptInjection?: unknown })
              .allowPromptInjection,
          }
        : undefined;
    const normalizedHooks =
      hooks && typeof hooks.allowPromptInjection === "boolean"
        ? {
            allowPromptInjection: hooks.allowPromptInjection,
          }
        : undefined;
    const subagentRaw = entry.subagent;
    const subagent =
      subagentRaw && typeof subagentRaw === "object" && !Array.isArray(subagentRaw)
        ? {
            allowModelOverride: (subagentRaw as { allowModelOverride?: unknown })
              .allowModelOverride,
            hasAllowedModelsConfig: Array.isArray(
              (subagentRaw as { allowedModels?: unknown }).allowedModels,
            ),
            allowedModels: Array.isArray((subagentRaw as { allowedModels?: unknown }).allowedModels)
              ? ((subagentRaw as { allowedModels?: unknown }).allowedModels as unknown[])
                  .map((model) => (typeof model === "string" ? model.trim() : ""))
                  .filter(Boolean)
              : undefined,
          }
        : undefined;
    const normalizedSubagent =
      subagent &&
      (typeof subagent.allowModelOverride === "boolean" ||
        subagent.hasAllowedModelsConfig ||
        (Array.isArray(subagent.allowedModels) && subagent.allowedModels.length > 0))
        ? {
            ...(typeof subagent.allowModelOverride === "boolean"
              ? { allowModelOverride: subagent.allowModelOverride }
              : {}),
            ...(subagent.hasAllowedModelsConfig ? { hasAllowedModelsConfig: true } : {}),
            ...(Array.isArray(subagent.allowedModels) && subagent.allowedModels.length > 0
              ? { allowedModels: subagent.allowedModels }
              : {}),
          }
        : undefined;
    normalized[normalizedKey] = {
      ...normalized[normalizedKey],
      enabled:
        typeof entry.enabled === "boolean" ? entry.enabled : normalized[normalizedKey]?.enabled,
      hooks: normalizedHooks ?? normalized[normalizedKey]?.hooks,
      subagent: normalizedSubagent ?? normalized[normalizedKey]?.subagent,
      config: "config" in entry ? entry.config : normalized[normalizedKey]?.config,
    };
  }
  return normalized;
};

export const normalizePluginsConfig = (
  config?: OpenClawConfig["plugins"],
): NormalizedPluginsConfig => {
  const memorySlot = normalizeSlotValue(config?.slots?.memory);
  return {
    enabled: config?.enabled !== false,
    allow: normalizeList(config?.allow),
    deny: normalizeList(config?.deny),
    loadPaths: normalizeList(config?.load?.paths),
    slots: {
      memory: memorySlot === undefined ? defaultSlotIdForKey("memory") : memorySlot,
    },
    entries: normalizePluginEntries(config?.entries),
  };
};

const hasExplicitMemorySlot = (plugins?: OpenClawConfig["plugins"]) =>
  Boolean(plugins?.slots && Object.prototype.hasOwnProperty.call(plugins.slots, "memory"));

const hasExplicitMemoryEntry = (plugins?: OpenClawConfig["plugins"]) =>
  Boolean(plugins?.entries && Object.prototype.hasOwnProperty.call(plugins.entries, "memory-core"));

export const hasExplicitPluginConfig = (plugins?: OpenClawConfig["plugins"]) => {
  if (!plugins) {
    return false;
  }
  if (typeof plugins.enabled === "boolean") {
    return true;
  }
  if (Array.isArray(plugins.allow) && plugins.allow.length > 0) {
    return true;
  }
  if (Array.isArray(plugins.deny) && plugins.deny.length > 0) {
    return true;
  }
  if (plugins.load?.paths && Array.isArray(plugins.load.paths) && plugins.load.paths.length > 0) {
    return true;
  }
  if (plugins.slots && Object.keys(plugins.slots).length > 0) {
    return true;
  }
  if (plugins.entries && Object.keys(plugins.entries).length > 0) {
    return true;
  }
  return false;
};

export function applyTestPluginDefaults(
  cfg: OpenClawConfig,
  env: NodeJS.ProcessEnv = process.env,
): OpenClawConfig {
  if (!env.VITEST) {
    return cfg;
  }
  const plugins = cfg.plugins;
  const explicitConfig = hasExplicitPluginConfig(plugins);
  if (explicitConfig) {
    if (hasExplicitMemorySlot(plugins) || hasExplicitMemoryEntry(plugins)) {
      return cfg;
    }
    return {
      ...cfg,
      plugins: {
        ...plugins,
        slots: {
          ...plugins?.slots,
          memory: "none",
        },
      },
    };
  }

  return {
    ...cfg,
    plugins: {
      ...plugins,
      enabled: false,
      slots: {
        ...plugins?.slots,
        memory: "none",
      },
    },
  };
}

export function isTestDefaultMemorySlotDisabled(
  cfg: OpenClawConfig,
  env: NodeJS.ProcessEnv = process.env,
): boolean {
  if (!env.VITEST) {
    return false;
  }
  const plugins = cfg.plugins;
  if (hasExplicitMemorySlot(plugins) || hasExplicitMemoryEntry(plugins)) {
    return false;
  }
  return true;
}

export function resolveEnableState(
  id: string,
  origin: PluginRecord["origin"],
  config: NormalizedPluginsConfig,
  enabledByDefault?: boolean,
): { enabled: boolean; reason?: string } {
  if (!config.enabled) {
    return { enabled: false, reason: "plugins disabled" };
  }
  if (config.deny.includes(id)) {
    return { enabled: false, reason: "blocked by denylist" };
  }
  const entry = config.entries[id];
  if (entry?.enabled === false) {
    return { enabled: false, reason: "disabled in config" };
  }
  const explicitlyAllowed = config.allow.includes(id);
  if (origin === "workspace" && !explicitlyAllowed && entry?.enabled !== true) {
    return { enabled: false, reason: "workspace plugin (disabled by default)" };
  }
  if (config.slots.memory === id) {
    return { enabled: true };
  }
  if (config.allow.length > 0 && !explicitlyAllowed) {
    return { enabled: false, reason: "not in allowlist" };
  }
  if (entry?.enabled === true) {
    return { enabled: true };
  }
  if (origin === "bundled" && enabledByDefault === true) {
    return { enabled: true };
  }
  if (origin === "bundled") {
    return { enabled: false, reason: "bundled (disabled by default)" };
  }
  return { enabled: true };
}

export function isBundledChannelEnabledByChannelConfig(
  cfg: OpenClawConfig | undefined,
  pluginId: string,
): boolean {
  if (!cfg) {
    return false;
  }
  const channelId = normalizeChatChannelId(pluginId);
  if (!channelId) {
    return false;
  }
  const channels = cfg.channels as Record<string, unknown> | undefined;
  const entry = channels?.[channelId];
  if (!entry || typeof entry !== "object" || Array.isArray(entry)) {
    return false;
  }
  return (entry as Record<string, unknown>).enabled === true;
}

export function resolveEffectiveEnableState(params: {
  id: string;
  origin: PluginRecord["origin"];
  config: NormalizedPluginsConfig;
  rootConfig?: OpenClawConfig;
  enabledByDefault?: boolean;
}): { enabled: boolean; reason?: string } {
  const base = resolveEnableState(params.id, params.origin, params.config, params.enabledByDefault);
  if (
    !base.enabled &&
    base.reason === "bundled (disabled by default)" &&
    isBundledChannelEnabledByChannelConfig(params.rootConfig, params.id)
  ) {
    return { enabled: true };
  }
  return base;
}

export function resolveMemorySlotDecision(params: {
  id: string;
  kind?: string;
  slot: string | null | undefined;
  selectedId: string | null;
}): { enabled: boolean; reason?: string; selected?: boolean } {
  if (params.kind !== "memory") {
    return { enabled: true };
  }
  if (params.slot === null) {
    return { enabled: false, reason: "memory slot disabled" };
  }
  if (typeof params.slot === "string") {
    if (params.slot === params.id) {
      return { enabled: true, selected: true };
    }
    return {
      enabled: false,
      reason: `memory slot set to "${params.slot}"`,
    };
  }
  if (params.selectedId && params.selectedId !== params.id) {
    return {
      enabled: false,
      reason: `memory slot already filled by "${params.selectedId}"`,
    };
  }
  return { enabled: true, selected: true };
}