// Doctor warnings for configured channels blocked by disabled channel plugins.
import { normalizeOptionalLowercaseString } from "@openclaw/normalization-core/string-coerce";
import { sanitizeForLog } from "../../../../packages/terminal-core/src/ansi.js";
import { listExplicitlyDisabledChannelIdsForConfig } from "../../../channels/config-presence.js";
import type { OpenClawConfig } from "../../../config/types.openclaw.js";
import type { HealthFinding } from "../../../flows/health-checks.js";
import {
  hasExplicitChannelConfig,
  listExplicitConfiguredChannelIdsForConfig,
  resolveConfiguredChannelPresencePolicy,
} from "../../../plugins/channel-plugin-ids.js";
import { normalizePluginsConfig } from "../../../plugins/config-state.js";
import { isPluginEnabledByDefaultForPlatform } from "../../../plugins/default-enablement.js";
import {
  hasExplicitManifestOwnerTrust,
  isActivatedManifestOwner,
  resolveManifestOwnerBasePolicyBlock,
  type ManifestOwnerBasePolicyBlockReason,
} from "../../../plugins/manifest-owner-policy.js";
import type { PluginManifestRecord } from "../../../plugins/manifest-registry.js";
import { loadPluginManifestRegistryForPluginRegistry } from "../../../plugins/plugin-registry.js";
import { isSafeChannelEnvVarTriggerName } from "../../../secrets/channel-env-var-names.js";

const CHANNEL_PLUGIN_BLOCKERS_CHECK_ID = "core/doctor/channel-plugin-blockers";

export type ChannelPluginBlockerHit = {
  /** Normalized configured channel id whose backing plugin is unavailable. */
  channelId: string;
  /** Plugin id that would provide the configured channel. */
  pluginId: string;
  /** Another owner can still serve this channel despite this owner-specific blocker. */
  channelAvailable?: boolean;
  /** Effective activation reason preventing the plugin from loading. */
  reason:
    | "disabled in config"
    | "blocked by denylist"
    | "plugins disabled"
    | "missing explicit enablement"
    | "not enabled"
    | "not enabled and not in allowlist"
    | "not in allowlist";
};

/** Find configured channel ids whose backing plugins cannot activate. */
export function scanConfiguredChannelPluginBlockers(
  cfg: OpenClawConfig,
  env: NodeJS.ProcessEnv = process.env,
  activationSourceConfig: OpenClawConfig = cfg,
): ChannelPluginBlockerHit[] {
  const explicitChannelIds = listExplicitConfiguredChannelIdsForConfig(cfg)
    .map((channelId) => normalizeOptionalLowercaseString(channelId))
    .filter((channelId): channelId is string => Boolean(channelId));
  const sourcePluginsConfig = normalizePluginsConfig(activationSourceConfig.plugins);
  const effectivePluginsConfig = normalizePluginsConfig(cfg.plugins);
  const registry = loadPluginManifestRegistryForPluginRegistry({
    config: cfg,
    env,
    includeDisabled: true,
  });
  const manifestEnvTriggers = listManifestEnvConfiguredChannelTriggers(registry.plugins, env);
  const policyEntries = resolveConfiguredChannelPresencePolicy({
    config: cfg,
    activationSourceConfig,
    env,
    includePersistedAuthState: false,
    manifestRecords: registry.plugins,
  });
  // A manifest env match identifies one owner. Do not widen the same ambient env signal to
  // sibling owners that cannot consume that credential.
  const policyChannelIds = policyEntries
    .filter(
      (entry) =>
        !manifestEnvTriggers.has(entry.channelId) ||
        entry.sources.some((source) => source !== "env" && source !== "manifest-env"),
    )
    .map((entry) => entry.channelId);
  const genericChannelIds = new Set([
    ...explicitChannelIds,
    ...(explicitChannelIds.length === 0 ? policyChannelIds : []),
  ]);
  for (const channelId of listExplicitlyDisabledChannelIdsForConfig(cfg)) {
    const normalizedChannelId = normalizeOptionalLowercaseString(channelId) ?? channelId;
    genericChannelIds.delete(normalizedChannelId);
    manifestEnvTriggers.delete(normalizedChannelId);
  }
  if (genericChannelIds.size === 0 && manifestEnvTriggers.size === 0) {
    return [];
  }
  const hits: ChannelPluginBlockerHit[] = [];
  const hitKeys = new Set<string>();
  const globalDisableChannelIds = new Set<string>();
  const addHits = (
    channelId: string,
    ownerStates: ChannelOwnerState[],
    channelAvailable = false,
  ) => {
    for (const state of ownerStates) {
      if (!state.reason) {
        continue;
      }
      if (state.reason === "plugins disabled") {
        if (globalDisableChannelIds.has(channelId)) {
          continue;
        }
        globalDisableChannelIds.add(channelId);
      }
      const key = `${channelId}\0${state.pluginId}\0${state.reason}`;
      if (hitKeys.has(key)) {
        continue;
      }
      hitKeys.add(key);
      const hit: ChannelPluginBlockerHit = {
        channelId,
        pluginId: state.pluginId,
        reason: state.reason,
      };
      if (channelAvailable) {
        hit.channelAvailable = true;
      }
      hits.push(hit);
    }
  };

  for (const channelId of genericChannelIds) {
    const owners = registry.plugins.filter((plugin) =>
      plugin.channels.some(
        (rawChannelId) => normalizeOptionalLowercaseString(rawChannelId) === channelId,
      ),
    );
    const ownerStates = owners.map((plugin) =>
      resolveConfiguredChannelOwnerState({
        plugin,
        channelId,
        sourceConfig: activationSourceConfig,
        sourcePluginsConfig,
        effectiveConfig: cfg,
        effectivePluginsConfig,
      }),
    );
    if (ownerStates.some((state) => state.available)) {
      continue;
    }
    addHits(channelId, ownerStates);
  }

  for (const [channelId, triggers] of manifestEnvTriggers) {
    const channelOwnerStates = registry.plugins
      .filter((plugin) =>
        plugin.channels.some(
          (rawChannelId) => normalizeOptionalLowercaseString(rawChannelId) === channelId,
        ),
      )
      .map((plugin) =>
        resolveConfiguredChannelOwnerState({
          plugin,
          channelId,
          sourceConfig: activationSourceConfig,
          sourcePluginsConfig,
          effectiveConfig: cfg,
          effectivePluginsConfig,
        }),
      );
    const channelAvailable = channelOwnerStates.some((state) => state.available);
    for (const pluginIds of triggers.values()) {
      const ownerStates = channelOwnerStates.filter((state) => pluginIds.has(state.pluginId));
      if (ownerStates.some((state) => state.available)) {
        continue;
      }
      addHits(channelId, ownerStates, channelAvailable);
    }
  }

  return hits;
}

function listManifestEnvConfiguredChannelTriggers(
  plugins: readonly PluginManifestRecord[],
  env: NodeJS.ProcessEnv,
): Map<string, Map<string, Set<string>>> {
  const triggersByChannelId = new Map<string, Map<string, Set<string>>>();
  for (const plugin of plugins) {
    const ownedChannelIds = new Set(
      plugin.channels
        .map((channelId) => normalizeOptionalLowercaseString(channelId))
        .filter((channelId): channelId is string => Boolean(channelId)),
    );
    for (const [rawChannelId, envVars] of Object.entries(plugin.channelEnvVars ?? {})) {
      const channelId = normalizeOptionalLowercaseString(rawChannelId);
      if (!channelId || !ownedChannelIds.has(channelId)) {
        continue;
      }
      for (const envVar of envVars) {
        if (!isSafeChannelEnvVarTriggerName(envVar)) {
          continue;
        }
        const value = env[envVar] ?? env[envVar.toUpperCase()];
        if (typeof value !== "string" || value.trim().length === 0) {
          continue;
        }
        let triggers = triggersByChannelId.get(channelId);
        if (!triggers) {
          triggers = new Map();
          triggersByChannelId.set(channelId, triggers);
        }
        const trigger = envVar.trim().toUpperCase();
        let ownerIds = triggers.get(trigger);
        if (!ownerIds) {
          ownerIds = new Set();
          triggers.set(trigger, ownerIds);
        }
        ownerIds.add(plugin.id);
      }
    }
  }
  return triggersByChannelId;
}

type ChannelOwnerState = {
  pluginId: string;
  available: boolean;
  reason?: ChannelPluginBlockerHit["reason"];
};

function resolveConfiguredChannelOwnerState(params: {
  plugin: PluginManifestRecord;
  channelId: string;
  sourceConfig: OpenClawConfig;
  sourcePluginsConfig: ReturnType<typeof normalizePluginsConfig>;
  effectiveConfig: OpenClawConfig;
  effectivePluginsConfig: ReturnType<typeof normalizePluginsConfig>;
}): ChannelOwnerState {
  const bundledChannelConfigured =
    params.plugin.origin === "bundled" &&
    hasExplicitChannelConfig({
      config: params.sourceConfig,
      channelId: params.channelId,
    });
  const sourceAllowlistBypass =
    bundledChannelConfigured ||
    (params.plugin.origin === "workspace" &&
      params.sourcePluginsConfig.slots.contextEngine === params.plugin.id);
  const sourceBaseBlock = resolveManifestOwnerBasePolicyBlock({
    plugin: params.plugin,
    normalizedConfig: params.sourcePluginsConfig,
    allowRestrictiveAllowlistBypass: sourceAllowlistBypass,
  });
  const sourceExternalTrusted =
    params.plugin.origin === "bundled" ||
    hasExplicitManifestOwnerTrust({
      plugin: params.plugin,
      normalizedConfig: params.sourcePluginsConfig,
    }) ||
    (params.plugin.origin === "workspace" &&
      params.sourcePluginsConfig.slots.contextEngine === params.plugin.id);
  const sourceBundledActivated =
    params.plugin.origin === "bundled" &&
    (bundledChannelConfigured ||
      isActivatedManifestOwner({
        plugin: params.plugin,
        normalizedConfig: params.sourcePluginsConfig,
        rootConfig: params.sourceConfig,
      }));
  const sourceBundledNeedsExplicitEnablement =
    params.plugin.origin === "bundled" &&
    !isPluginEnabledByDefaultForPlatform(params.plugin) &&
    params.sourcePluginsConfig.entries[params.plugin.id]?.enabled !== true;

  const effectiveBundledChannelConfigured =
    params.plugin.origin === "bundled" &&
    hasExplicitChannelConfig({
      config: params.effectiveConfig,
      channelId: params.channelId,
    });
  const effectiveAllowlistBypass =
    effectiveBundledChannelConfigured ||
    (params.plugin.origin === "workspace" &&
      params.effectivePluginsConfig.slots.contextEngine === params.plugin.id);
  const effectiveBaseBlock = resolveManifestOwnerBasePolicyBlock({
    plugin: params.plugin,
    normalizedConfig: params.effectivePluginsConfig,
    allowRestrictiveAllowlistBypass: effectiveAllowlistBypass,
  });
  const available =
    effectiveBaseBlock === null &&
    sourceExternalTrusted &&
    (effectiveBundledChannelConfigured ||
      isActivatedManifestOwner({
        plugin: params.plugin,
        normalizedConfig: params.effectivePluginsConfig,
        rootConfig: params.effectiveConfig,
      }));
  return {
    pluginId: params.plugin.id,
    available,
    reason: available
      ? undefined
      : params.plugin.origin === "bundled" &&
          sourceBaseBlock === "not-in-allowlist" &&
          sourceBundledNeedsExplicitEnablement
        ? "not enabled and not in allowlist"
        : (mapManifestOwnerBlockerReason(sourceBaseBlock) ??
          (!sourceExternalTrusted && sourceBaseBlock === null
            ? "missing explicit enablement"
            : params.plugin.origin === "bundled" &&
                sourceBaseBlock === null &&
                !sourceBundledActivated
              ? "not enabled"
              : undefined)),
  };
}

function mapManifestOwnerBlockerReason(
  reason: ManifestOwnerBasePolicyBlockReason | null,
): ChannelPluginBlockerHit["reason"] | undefined {
  if (reason === "plugins-disabled") {
    return "plugins disabled";
  }
  if (reason === "plugin-disabled") {
    return "disabled in config";
  }
  if (reason === "blocked-by-denylist") {
    return "blocked by denylist";
  }
  if (reason === "not-in-allowlist") {
    return "not in allowlist";
  }
  return undefined;
}

function formatReason(hit: ChannelPluginBlockerHit): string {
  if (hit.reason === "disabled in config") {
    return `plugin "${sanitizeForLog(hit.pluginId)}" is disabled by plugins.entries.${sanitizeForLog(hit.pluginId)}.enabled=false.`;
  }
  if (hit.reason === "blocked by denylist") {
    return `plugin "${sanitizeForLog(hit.pluginId)}" is blocked by plugins.deny. Remove "${sanitizeForLog(hit.pluginId)}" from plugins.deny.`;
  }
  if (hit.reason === "plugins disabled") {
    return `plugins.enabled=false blocks channel plugins globally.`;
  }
  if (hit.reason === "missing explicit enablement") {
    return `external plugin "${sanitizeForLog(hit.pluginId)}" is installed without explicit trust. Add plugins.entries.${sanitizeForLog(hit.pluginId)}.enabled=true.`;
  }
  if (hit.reason === "not enabled") {
    return `plugin "${sanitizeForLog(hit.pluginId)}" is installed but not enabled. Add plugins.entries.${sanitizeForLog(hit.pluginId)}.enabled=true.`;
  }
  if (hit.reason === "not enabled and not in allowlist") {
    return `plugin "${sanitizeForLog(hit.pluginId)}" is not enabled and is omitted from plugins.allow. Add plugins.entries.${sanitizeForLog(hit.pluginId)}.enabled=true and include "${sanitizeForLog(hit.pluginId)}" in plugins.allow.`;
  }
  if (hit.reason === "not in allowlist") {
    return `plugin "${sanitizeForLog(hit.pluginId)}" is installed but omitted from plugins.allow. Include "${sanitizeForLog(hit.pluginId)}" in plugins.allow.`;
  }
  return `plugin "${sanitizeForLog(hit.pluginId)}" is not loadable (${sanitizeForLog(hit.reason)}).`;
}

/** Format doctor warnings for configured channels blocked by plugin activation state. */
export function collectConfiguredChannelPluginBlockerWarnings(
  hits: ChannelPluginBlockerHit[],
): string[] {
  return hits.map(
    (hit) =>
      `- channels.${sanitizeForLog(hit.channelId)}: channel is configured, but ${formatReason(hit)} Fix plugin enablement before relying on setup guidance for this channel.`,
  );
}

function stripListMarker(message: string): string {
  return message.startsWith("- ") ? message.slice(2) : message;
}

/** Convert a configured channel plugin blocker into a structured Doctor finding. */
export function channelPluginBlockerHitToHealthFinding(
  hit: ChannelPluginBlockerHit,
): HealthFinding {
  return {
    checkId: CHANNEL_PLUGIN_BLOCKERS_CHECK_ID,
    severity: "warning",
    message: stripListMarker(collectConfiguredChannelPluginBlockerWarnings([hit])[0] ?? ""),
    path: `channels.${hit.channelId}`,
    target: hit.pluginId,
    requirement: hit.reason,
    fixHint: "Fix plugin enablement before relying on setup guidance for this channel.",
  };
}

/** Return true when a setup warning targets a channel already explained by plugin blockers. */
export function isWarningBlockedByChannelPlugin(
  warning: string,
  hits: ChannelPluginBlockerHit[],
): boolean {
  return hits.some((hit) => {
    if (hit.channelAvailable) {
      return false;
    }
    const prefix = `channels.${sanitizeForLog(hit.channelId)}`;
    return warning.includes(`${prefix}:`) || warning.includes(`${prefix}.`);
  });
}
