import {
  type MachinePresetName,
  conditionallyImportPacket,
  parsePacket,
  stringifyIO,
} from "@trigger.dev/core/v3";
import { type TaskRun } from "@trigger.dev/database";
import { findEnvironmentById } from "~/models/runtimeEnvironment.server";
import { baseWorkerQueue } from "~/runEngine/concerns/workerQueueSplit.server";
import { logger } from "~/services/logger.server";
import { BaseService } from "./baseService.server";
import { OutOfEntitlementError, TriggerTaskService } from "./triggerTask.server";
import { type RunOptionsData } from "../testTask";
import { replaceSuperJsonPayload } from "@trigger.dev/core/v3/utils/ioSerialization";
import { determineRealtimeStreamsVersion } from "~/services/realtime/v1StreamsGlobal.server";

type OverrideOptions = {
  environmentId?: string;
  payload?: string;
  metadata?: unknown;
  bulkActionId?: string;
  triggerSource?: string;
} & RunOptionsData;

export class ReplayTaskRunService extends BaseService {
  public async call(existingTaskRun: TaskRun, overrideOptions: OverrideOptions = {}) {
    // An override environment must belong to the same project as the source
    // run. The source project is derived from the run's own environment rather
    // than existingTaskRun.projectId, since the buffered-run fallback passes a
    // synthetic TaskRun with no projectId. Only check when a distinct override
    // is supplied; otherwise the run's own environment is used.
    if (
      overrideOptions.environmentId &&
      overrideOptions.environmentId !== existingTaskRun.runtimeEnvironmentId
    ) {
      const [overrideEnvironment, sourceEnvironment] = await Promise.all([
        this._prisma.runtimeEnvironment.findFirst({
          where: { id: overrideOptions.environmentId },
          select: { projectId: true },
        }),
        this._prisma.runtimeEnvironment.findFirst({
          where: { id: existingTaskRun.runtimeEnvironmentId },
          select: { projectId: true },
        }),
      ]);
      if (
        !overrideEnvironment ||
        !sourceEnvironment ||
        overrideEnvironment.projectId !== sourceEnvironment.projectId
      ) {
        logger.warn("Refusing to replay a run into an environment outside its project", {
          taskRunId: existingTaskRun.id,
          taskRunFriendlyId: existingTaskRun.friendlyId,
          sourceEnvironmentId: existingTaskRun.runtimeEnvironmentId,
          sourceProjectId: sourceEnvironment?.projectId ?? null,
          overrideEnvironmentId: overrideOptions.environmentId,
          overrideProjectId: overrideEnvironment?.projectId ?? null,
        });
        throw new Error("Cannot replay a run into an environment outside its project");
      }
    }

    const authenticatedEnvironment = await findEnvironmentById(
      overrideOptions.environmentId ?? existingTaskRun.runtimeEnvironmentId
    );
    if (!authenticatedEnvironment) {
      return;
    }

    if (authenticatedEnvironment.archivedAt) {
      throw new Error("Can't replay a run on an archived environment");
    }

    logger.info("Replaying task run", {
      taskRunId: existingTaskRun.id,
      taskRunFriendlyId: existingTaskRun.friendlyId,
    });

    const existingEnvironment = await this._prisma.runtimeEnvironment.findFirstOrThrow({
      where: {
        id: existingTaskRun.runtimeEnvironmentId,
      },
      select: {
        id: true,
        type: true,
      },
    });

    const payloadPacket = await this.overrideExistingPayloadPacket(
      existingTaskRun,
      overrideOptions.payload
    );
    const parsedPayload =
      payloadPacket.dataType === "application/json"
        ? await parsePacket(payloadPacket)
        : payloadPacket.data;
    const payloadType = payloadPacket.dataType;
    const metadata = overrideOptions.metadata ?? (await this.getExistingMetadata(existingTaskRun));
    const tags = overrideOptions.tags ?? existingTaskRun.runTags;
    // Only use the region from the existing run if V2 engine and neither environment is dev
    const ignoreRegion =
      existingTaskRun.engine === "V1" ||
      existingEnvironment.type === "DEVELOPMENT" ||
      authenticatedEnvironment.type === "DEVELOPMENT";
    const region = ignoreRegion
      ? undefined
      : overrideOptions.region ||
        existingTaskRun.region ||
        baseWorkerQueue(existingTaskRun.workerQueue);

    try {
      const taskQueue = await this._prisma.taskQueue.findFirst({
        where: {
          runtimeEnvironmentId: authenticatedEnvironment.id,
          name: overrideOptions.queue ?? existingTaskRun.queue,
        },
      });

      const triggerTaskService = new TriggerTaskService();
      const result = await triggerTaskService.call(
        existingTaskRun.taskIdentifier,
        authenticatedEnvironment,
        {
          payload: parsedPayload,
          options: {
            payloadType,
            queue: taskQueue
              ? {
                  name: taskQueue.name,
                }
              : undefined,
            test: existingTaskRun.isTest,
            tags,
            metadata: metadata,
            delay: overrideOptions.delaySeconds
              ? new Date(Date.now() + overrideOptions.delaySeconds * 1000)
              : undefined,
            ttl: overrideOptions.ttlSeconds,
            idempotencyKey: overrideOptions.idempotencyKey,
            idempotencyKeyTTL: overrideOptions.idempotencyKeyTTLSeconds
              ? `${overrideOptions.idempotencyKeyTTLSeconds}s`
              : undefined,
            concurrencyKey:
              overrideOptions.concurrencyKey ?? existingTaskRun.concurrencyKey ?? undefined,
            maxAttempts: overrideOptions.maxAttempts,
            maxDuration: overrideOptions.maxDurationSeconds,
            machine:
              overrideOptions.machine ??
              (existingTaskRun.machinePreset as MachinePresetName) ??
              undefined,
            lockToVersion:
              overrideOptions.version === "latest" ? undefined : overrideOptions.version,
            bulkActionId: overrideOptions?.bulkActionId,
            region,
            priority: overrideOptions.prioritySeconds,
          },
        },
        {
          spanParentAsLink: true,
          parentAsLinkType: "replay",
          replayedFromTaskRunFriendlyId: existingTaskRun.friendlyId,
          traceContext: {
            traceparent: `00-${existingTaskRun.traceId}-${existingTaskRun.spanId}-01`,
          },
          realtimeStreamsVersion: determineRealtimeStreamsVersion(
            existingTaskRun.realtimeStreamsVersion
          ),
          triggerSource: overrideOptions.triggerSource ?? "api",
          triggerAction: "replay",
        }
      );

      return result?.run;
    } catch (error) {
      if (error instanceof OutOfEntitlementError) {
        return;
      }

      logger.error("Failed to replay a run", {
        error: error instanceof Error ? error.message : error,
      });

      return;
    }
  }

  private async overrideExistingPayloadPacket(
    existingTaskRun: TaskRun,
    stringifiedPayloadOverride: string | undefined
  ) {
    if (existingTaskRun.payloadType === "application/store") {
      return conditionallyImportPacket({
        data: existingTaskRun.payload,
        dataType: existingTaskRun.payloadType,
      });
    }

    if (stringifiedPayloadOverride && existingTaskRun.payloadType === "application/super+json") {
      const newPayload = await replaceSuperJsonPayload(
        existingTaskRun.payload,
        stringifiedPayloadOverride
      );

      return stringifyIO(newPayload);
    }

    return conditionallyImportPacket({
      data: stringifiedPayloadOverride ?? existingTaskRun.payload,
      dataType: existingTaskRun.payloadType,
    });
  }

  private async getExistingMetadata(existingTaskRun: TaskRun) {
    if (!existingTaskRun.seedMetadata) {
      return undefined;
    }

    return parsePacket({
      data: existingTaskRun.seedMetadata,
      dataType: existingTaskRun.seedMetadataType,
    });
  }
}
