import * as Effect from "effect/Effect";
import * as Binding from "../../Binding.ts";
import * as Output from "../../Output.ts";
import { isBindingHost } from "../Lambda/Function.ts";
import type { Farm } from "./Farm.ts";
import type { Queue } from "./Queue.ts";

/**
 * Shared scaffolding for AWS Deadline Cloud HTTP bindings.
 *
 * NOT exported from `index.ts` — every thin `{Op}Http.ts` in this service is
 * a `Layer.effect(Cap, make…HttpBinding({ … }))` over one of the builders
 * below. Everything except the operation, the IAM action list, and the
 * injected identifiers is boilerplate.
 */

/**
 * Build the impl Effect for a queue-scoped job operation. The runtime half
 * injects the bound {@link Queue}'s `farmId` and `queueId` into every
 * request; the deploy-time half grants `actions` on the queue's ARN and on
 * its jobs (`{queueArn}/job/*`), since Deadline authorizes job-level actions
 * (GetJob, UpdateJob, ListSteps, …) against the job resource.
 */
export const makeDeadlineQueueHttpBinding = <
  I extends { farmId: string; queueId: string },
  A,
  E,
  R,
>(options: {
  /** Fully-qualified binding tag, e.g. `AWS.Deadline.CreateJob`. */
  tag: string;
  /** The distilled operation; `farmId`/`queueId` are injected. */
  operation: Effect.Effect<(input: I) => Effect.Effect<A, E>, never, R>;
  /** IAM actions granted on the queue ARN and its jobs. */
  actions: readonly string[];
}) =>
  Effect.gen(function* () {
    const op = yield* options.operation;

    return Effect.fn(function* (queue: Queue) {
      const FarmId = yield* queue.farmId;
      const QueueId = yield* queue.queueId;
      if (!globalThis.__ALCHEMY_RUNTIME__) {
        const host = yield* Binding.Host;
        if (isBindingHost(host)) {
          yield* host.bind`Allow(${host}, ${options.tag}(${queue}))`({
            policyStatements: [
              {
                Effect: "Allow",
                Action: [...options.actions],
                Resource: [
                  queue.queueArn,
                  queue.queueArn.pipe(Output.map((arn) => `${arn}/job/*`)),
                ],
              },
            ],
          });
        }
      }
      return Effect.fn(`${options.tag}(${queue.LogicalId})`)(function* (
        request?: Omit<I, "farmId" | "queueId">,
      ) {
        return yield* op({
          ...request,
          farmId: yield* FarmId,
          queueId: yield* QueueId,
        } as I);
      });
    });
  });

/**
 * Build the impl Effect for a queue-scoped search operation
 * (`SearchJobs`/`SearchSteps`/`SearchTasks` take a `queueIds` array rather
 * than a single `queueId`). The runtime half injects the bound
 * {@link Queue}'s `farmId` and `queueIds: [queueId]`; the deploy-time half
 * grants `actions` on the queue's ARN and its jobs.
 */
export const makeDeadlineQueueSearchHttpBinding = <
  I extends { farmId: string; queueIds: string[] },
  A,
  E,
  R,
>(options: {
  /** Fully-qualified binding tag, e.g. `AWS.Deadline.SearchJobs`. */
  tag: string;
  /** The distilled operation; `farmId`/`queueIds` are injected. */
  operation: Effect.Effect<(input: I) => Effect.Effect<A, E>, never, R>;
  /** IAM actions granted on the queue ARN and its jobs. */
  actions: readonly string[];
}) =>
  Effect.gen(function* () {
    const op = yield* options.operation;

    return Effect.fn(function* (queue: Queue) {
      const FarmId = yield* queue.farmId;
      const QueueId = yield* queue.queueId;
      if (!globalThis.__ALCHEMY_RUNTIME__) {
        const host = yield* Binding.Host;
        if (isBindingHost(host)) {
          yield* host.bind`Allow(${host}, ${options.tag}(${queue}))`({
            policyStatements: [
              {
                Effect: "Allow",
                Action: [...options.actions],
                Resource: [
                  queue.queueArn,
                  queue.queueArn.pipe(Output.map((arn) => `${arn}/job/*`)),
                ],
              },
            ],
          });
        }
      }
      return Effect.fn(`${options.tag}(${queue.LogicalId})`)(function* (
        request?: Omit<I, "farmId" | "queueIds">,
      ) {
        return yield* op({
          ...request,
          farmId: yield* FarmId,
          queueIds: [yield* QueueId],
        } as I);
      });
    });
  });

/**
 * Build the impl Effect for a farm-scoped operation (usage statistics
 * aggregations). The runtime half injects the bound {@link Farm}'s `farmId`;
 * the deploy-time half grants `actions` on the farm's ARN and everything
 * under it (queues/fleets referenced by the aggregation's `resourceIds`).
 */
export const makeDeadlineFarmHttpBinding = <
  I extends { farmId: string },
  A,
  E,
  R,
>(options: {
  /** Fully-qualified binding tag, e.g. `AWS.Deadline.GetSessionsStatisticsAggregation`. */
  tag: string;
  /** The distilled operation; `farmId` is injected. */
  operation: Effect.Effect<(input: I) => Effect.Effect<A, E>, never, R>;
  /** IAM actions granted on the farm ARN and its sub-resources. */
  actions: readonly string[];
}) =>
  Effect.gen(function* () {
    const op = yield* options.operation;

    return Effect.fn(function* (farm: Farm) {
      const FarmId = yield* farm.farmId;
      if (!globalThis.__ALCHEMY_RUNTIME__) {
        const host = yield* Binding.Host;
        if (isBindingHost(host)) {
          yield* host.bind`Allow(${host}, ${options.tag}(${farm}))`({
            policyStatements: [
              {
                Effect: "Allow",
                Action: [...options.actions],
                Resource: [
                  farm.farmArn,
                  farm.farmArn.pipe(Output.map((arn) => `${arn}/*`)),
                ],
              },
            ],
          });
        }
      }
      return Effect.fn(`${options.tag}(${farm.LogicalId})`)(function* (
        request?: Omit<I, "farmId">,
      ) {
        return yield* op({ ...request, farmId: yield* FarmId } as I);
      });
    });
  });