import { logger } from "../middleware/logger.js";
import { companies, type Db } from "@paperclipai/db";
import { eq } from "drizzle-orm";
import * as lifecycle from "../modules/agent-lifecycle/index.js";
import { withAccountingTransaction } from "./accounting-transaction.js";
import { budgetServiceInTransaction, policyBlocks, type BudgetServiceHooks } from "./budgets.js";
import { recordAgentStatusEvent, recordResourceCreationEvent } from "./resource-lifecycle-events.js";
import { clearPrimaryAgent } from "./primary-agent.js";
import { deleteAgentDependencies } from "./agent-deletion.js";
import { prepareAgentConfiguration, completeAgentConfiguration } from "./agent-configuration.js";
import { prepareAgentHire, initializeAgentHire, prepareAgentHireApproval, completeAgentHireApproval } from "./agent-hiring.js";
import { DELIVERY_QUEUES, notifyDeliveryWork } from "./delivery-work-notifications.js";
import { fenceActiveCompanyAgentStopsInTransaction as fenceActiveCompanyStops } from "../modules/agent-lifecycle/index.js";
import { applyAgentPolicyHoldsInTransaction } from "../modules/agent-lifecycle/index.js";
import { trackIdleWork } from "./task-admission.js";
import { environmentService } from "./environments.js";
import { instanceSettingsService } from "./instance-settings.js";
import { pluginEnvironmentRequiresAgent } from "./plugin-environment-driver.js";

export { scheduleAgentLifecycle, processAgentLifecycle } from "../modules/agent-lifecycle/index.js";
export type { LifecycleDriver, LifecycleAgent } from "../modules/agent-lifecycle/index.js";

export function createAgentLifecycleEffects(_hooks: BudgetServiceHooks = {}): lifecycle.LifecycleEffects {
  return {
    async setupRequiresPreparation(db, companyId, environmentId) {
      const id = environmentId ?? (await instanceSettingsService(db).get()).defaultEnvironmentId;
      const environment = id ? await environmentService(db).getById(id) : null;
      if (!environment || !await pluginEnvironmentRequiresAgent(db, environment)) return false;
      const [company] = await db.select({ requiresApproval: companies.requireBoardApprovalForNewAgents }).from(companies).where(eq(companies.id, companyId));
      if (!company || company.requiresApproval) return false;
      const bound = await environmentService(db).listBoundCompanyIds(environment.id);
      if (bound.length && !bound.includes(companyId)) throw new lifecycle.AgentLifecycleConflict("The environment belongs to another company");
      return true;
    },
    notifyWork: tx => notifyDeliveryWork(tx, DELIVERY_QUEUES.agentLifecycle),
    reportFailure(context, error) {
      const code = lifecycle.lifecycleFailureCode(error);
      logger.warn({ ...context, failureCode: code ?? "unclassified" }, "Agent lifecycle operation failed");
    },
    transaction: withAccountingTransaction,
    deleteDependencies: deleteAgentDependencies,
    policyBlocks,
    setAgentBudget: (db, publications, companyId, agentId, amount, userId, isActive) =>
      budgetServiceInTransaction(db, publications).upsertPolicy(companyId, {
        scopeType: "agent", scopeId: agentId, amount, isActive, windowKind: "calendar_month_utc",
      }, userId),
    recordCreation: (db, companyId, agentId) => recordResourceCreationEvent(db, companyId, "agent", agentId),
    recordStatus: recordAgentStatusEvent,
    clearPrimary: clearPrimaryAgent,
    prepareConfiguration: prepareAgentConfiguration,
    completeConfiguration: completeAgentConfiguration,
    prepareHire: prepareAgentHire,
    initializeHire: initializeAgentHire,
    prepareHireApproval: prepareAgentHireApproval,
    completeHireApproval: completeAgentHireApproval,
  };
}

export function createAgentLifecycle(db: Db, hooks: BudgetServiceHooks = {}) {
  return lifecycle.createAgentLifecycle(db, createAgentLifecycleEffects(hooks));
}

function trackedDriver(driver: lifecycle.LifecycleDriver): lifecycle.LifecycleDriver {
  return { ...driver, runHost: agent => trackIdleWork(driver.runHost(agent)),
    runPlugin: (agent, pluginId) => trackIdleWork(driver.runPlugin(agent, pluginId)) };
}

export function configureAgentLifecycle(db: Db, driver: lifecycle.LifecycleDriver, canRun = () => true) {
  return lifecycle.configureAgentLifecycle(db, createAgentLifecycleEffects(), trackedDriver(driver), canRun);
}

export function startAgentLifecycle(db: Db, driver: lifecycle.LifecycleDriver, canRun: () => boolean) {
  return lifecycle.startAgentLifecycle(db, createAgentLifecycleEffects(), trackedDriver(driver), canRun);
}

/** Budget evaluation owns the transaction and supplies the aggregate agent decision. */
export function applyAgentBudgetHoldInTransaction(tx: Db, companyId: string, agentId: string, blocked: boolean) {
  return applyAgentPolicyHoldsInTransaction(tx, createAgentLifecycleEffects(), companyId, agentId, { budget: blocked });
}

export function fenceActiveCompanyAgentStopsInTransaction(tx: Db, companyId: string, status: "paused" | "archived") {
  return fenceActiveCompanyStops(tx, createAgentLifecycleEffects(), companyId, status);
}