/**
 * Outbox-driven Meilisearch indexing for the rows-engine.
 *
 * `RowsApi.create / update / del` invokes one of `emitRowSearchUpsert` /
 * `emitRowSearchDelete` AFTER the canonical DB write so the
 * `search.index.*.upsert | .delete` outbox event is published as a
 * post-write projection update. The outbox event-router (#48) maps
 * `search.index.*` to the `outbox.search-index` BullMQ queue where the
 * search-indexer worker (apps/worker/src/jobs/search-indexer.ts) picks
 * the event up and upserts/deletes the Meilisearch document.
 *
 * CRM contacts are stored as rows with `entityName = "contact"` —
 * routing here therefore covers both the CRM-contacts and the generic
 * Rows hot-paths in a single producer location.
 *
 * Resilience: outbox publish failures are caught and logged rather
 * than re-thrown. A row CUD must NOT roll back because the downstream
 * indexing event could not be queued — the failure is observable in
 * logs and can be corrected with a targeted reindex. Moving these emits
 * into the surrounding row mutation transactions is a separate hardening
 * slice.
 */

import {
  crmContactsIndex,
  publishSearchDeleteEvent,
  publishSearchUpsertEvent,
  rowsIndex,
  type SearchIndexSchema,
} from "@toolctrl/search";
import type { Prisma, Row } from "@toolctrl/db/prisma-browser";
import { publishOutboxEvent, type OutboxPublisherTransaction } from "@toolctrl/db/outbox";
import { db } from "~/utils/db.server";
import RowValueHelper from "~/utils/helpers/RowValueHelper";
import { PropertyType } from "~/application/enums/entities/PropertyType";
import type { EntityWithDetails } from "~/utils/db/entities/entities.db.server";
import type { RowValueWithDetails } from "~/utils/db/entities/rows.db.server";

/**
 * Minimum shape the search-outbox emitters need from a row. Both
 * `RowWithDetails` (apps/web) and `LegacyRowWithDetails` (@toolctrl/db)
 * conform to it — we widen here so the helper can be called from either
 * code-path without re-shaping the row.
 */
export type RowForSearch = Row & {
  values: RowValueWithDetails[];
};

export interface RowSearchLogger {
  warn?: (record: Record<string, unknown>, message?: string) => void;
}

export interface EmitRowSearchUpsertInput {
  tenantId: string | null | undefined;
  entity: EntityWithDetails;
  row: RowForSearch;
  logger?: RowSearchLogger;
}

export interface EmitRowSearchDeleteInput {
  tenantId: string | null | undefined;
  entity: { name: string };
  rowId: string;
  logger?: RowSearchLogger;
}

/**
 * Returns the search-index schemas that should receive a search event
 * for the given entity. `contact` rows publish to BOTH `crm-contacts`
 * (typed schema with structured fields) and `rows` (generic searchable
 * blob) so either route can serve the contact list. All other entities
 * publish only to `rows`.
 */
function indexSchemasForEntity(entityName: string): readonly SearchIndexSchema[] {
  if (entityName === "contact") return [crmContactsIndex, rowsIndex];
  return [rowsIndex];
}

function buildSearchableBlob(entity: EntityWithDetails, row: RowForSearch): string {
  const parts: string[] = [];
  for (const property of entity.properties) {
    if (property.type !== PropertyType.TEXT && property.type !== PropertyType.SELECT) continue;
    try {
      const text = RowValueHelper.getText({ entity, row, name: property.name });
      if (typeof text === "string" && text.trim().length > 0) parts.push(text);
    } catch {
      // ignore — defensive, the row may not carry every property value
    }
  }
  return parts.join(" \n ");
}

function rowToContactDocument(
  entity: EntityWithDetails,
  row: RowForSearch,
  tenantId: string
): Record<string, unknown> & { id: string; tenantId: string } {
  const get = (name: string): string => {
    try {
      return RowValueHelper.getText({ entity, row, name }) ?? "";
    } catch {
      return "";
    }
  };
  return {
    id: row.id,
    tenantId,
    firstName: get("firstName"),
    lastName: get("lastName"),
    email: get("email"),
    company: get("company"),
    jobTitle: get("jobTitle"),
    status: get("status"),
    ownerId: row.createdByUserId ?? "",
    createdAt: row.createdAt instanceof Date ? row.createdAt.toISOString() : String(row.createdAt),
    updatedAt: row.updatedAt instanceof Date ? row.updatedAt.toISOString() : String(row.updatedAt),
  };
}

function rowToRowsDocument(
  entity: EntityWithDetails,
  row: RowForSearch,
  tenantId: string
): Record<string, unknown> & { id: string; tenantId: string } {
  return {
    id: row.id,
    tenantId,
    entityId: row.entityId,
    entityName: entity.name,
    folio: typeof row.folio === "number" ? row.folio : 0,
    searchable: buildSearchableBlob(entity, row),
    createdById: row.createdByUserId ?? "",
    createdAt: row.createdAt instanceof Date ? row.createdAt.toISOString() : String(row.createdAt),
    updatedAt: row.updatedAt instanceof Date ? row.updatedAt.toISOString() : String(row.updatedAt),
  };
}

function buildDocumentForSchema(
  schema: SearchIndexSchema,
  entity: EntityWithDetails,
  row: RowForSearch,
  tenantId: string
): Record<string, unknown> & { id: string; tenantId: string } {
  if (schema.name === "crm-contacts") return rowToContactDocument(entity, row, tenantId);
  return rowToRowsDocument(entity, row, tenantId);
}

export async function emitRowSearchUpsert(input: EmitRowSearchUpsertInput): Promise<void> {
  if (!input.tenantId) return; // non-tenant rows are not indexed
  const schemas = indexSchemasForEntity(input.entity.name);
  try {
    await db.$transaction(async (tx: unknown) => {
      for (const schema of schemas) {
        const document = buildDocumentForSchema(schema, input.entity, input.row, input.tenantId!);
        await publishSearchUpsertEvent({
          publish: async (event) =>
            publishOutboxEvent(tx as OutboxPublisherTransaction, {
              tenantId: event.tenantId,
              type: event.type,
              payload: event.payload as Prisma.InputJsonValue,
              dispatchKey: event.dispatchKey ?? undefined,
            }),
          schema,
          tenantId: input.tenantId!,
          entityName: schema.name === "crm-contacts" ? "crmcontact" : "row",
          document,
        });
      }
    });
  } catch (error) {
    input.logger?.warn?.(
      {
        component: "row-search-outbox",
        rowId: input.row.id,
        entityName: input.entity.name,
        error: error instanceof Error ? error.message : "unknown",
      },
      "row search upsert outbox publish failed"
    );
  }
}

export async function emitRowSearchDelete(input: EmitRowSearchDeleteInput): Promise<void> {
  if (!input.tenantId) return;
  const schemas = indexSchemasForEntity(input.entity.name);
  try {
    await db.$transaction(async (tx: unknown) => {
      for (const schema of schemas) {
        await publishSearchDeleteEvent({
          publish: async (event) =>
            publishOutboxEvent(tx as OutboxPublisherTransaction, {
              tenantId: event.tenantId,
              type: event.type,
              payload: event.payload as Prisma.InputJsonValue,
              dispatchKey: event.dispatchKey ?? undefined,
            }),
          schema,
          tenantId: input.tenantId!,
          entityName: schema.name === "crm-contacts" ? "crmcontact" : "row",
          documentId: input.rowId,
        });
      }
    });
  } catch (error) {
    input.logger?.warn?.(
      {
        component: "row-search-outbox",
        rowId: input.rowId,
        entityName: input.entity.name,
        error: error instanceof Error ? error.message : "unknown",
      },
      "row search delete outbox publish failed"
    );
  }
}