// SPDX-License-Identifier: LicenseRef-ConusAI-Template-1.0
// Node action for the documents pipeline. OCR, Blob and model calls happen here; every repository
// change below is a single internal mutation/query and proposal creation remains atomic with its
// outbox event.

"use node"

import { env } from "node:process"
import { AppError, notFound } from "@conusai-kit/core"
import { systemActor } from "@conusai-kit/core/worker"
import { DEFAULT_FILES_POLICY, type ProcessorJobPayload, platformObjectStore } from "@conusai-kit/files"
import { createDocumentReader, createModelGateway, createObjectStore } from "@conusai-kit/platform"
import { makeFunctionReference } from "convex/server"
import { v } from "convex/values"
import { excludedPageClassNamesOf } from "../config/dist/documents.js"
import { pageClassesOf } from "../modules/dist/documents/contract/constants.js"
import type { DocumentScope } from "../modules/dist/documents/core/lines.js"
import {
  type DocumentProcessRecords,
  type ProcessDocumentRow,
  processDocumentWithRecords,
} from "../modules/dist/documents/core/process.js"
import { modelLineExtractor, sdkDocumentOcr } from "../modules/dist/documents/index.js"
import { internalAction } from "./_generated/server"

const required = (name: string): string => {
  const value = env[name]?.trim()
  if (!value) throw new Error(`Convex deployment is missing ${name}`)
  return value
}

const serviceEnv = () => {
  const project = Number(required("CONUSAI_PROJECT_ID"))
  if (!Number.isSafeInteger(project) || project < 1)
    throw new Error("Convex deployment has an invalid CONUSAI_PROJECT_ID")
  return {
    CONUSAI_API_URL: required("CONUSAI_API_URL"),
    CONUSAI_API_TOKEN: required("CONUSAI_API_TOKEN"),
    CONUSAI_PROJECT_ID: String(project),
  }
}

const platformBlobStore = (deployment: ReturnType<typeof serviceEnv>) =>
  platformObjectStore({ blob: createObjectStore(deployment) })

const queryRef = (name: string) => makeFunctionReference<"query">(name)
const mutationRef = (name: string) => makeFunctionReference<"mutation">(name)

const documentScope = (ids: { orgId: string; workspaceId: string; projectId: string }): DocumentScope => ({
  level: "project",
  actor: systemActor("documents.ocr"),
  ...ids,
})

export const process = internalAction({
  args: {
    jobId: v.string(),
    attempt: v.number(),
    orgId: v.string(),
    workspaceId: v.string(),
    projectId: v.string(),
    payload: v.any(),
  },
  handler: async (ctx, args) => {
    const ids = { orgId: args.orgId, workspaceId: args.workspaceId, projectId: args.projectId }
    const scope = documentScope(ids)
    const deployment = serviceEnv()
    const store = platformBlobStore(deployment)
    const reader = sdkDocumentOcr(createDocumentReader(deployment))
    const model = env.AI_MODEL?.trim() || "anthropic/claude-sonnet-5"
    const excludedPageClassNames = excludedPageClassNamesOf()
    const extractor = modelLineExtractor({
      gateway: createModelGateway(deployment, { model }),
      model,
      ...(excludedPageClassNames === undefined ? {} : { excludedPageClasses: pageClassesOf(excludedPageClassNames) }),
    })
    const payload = args.payload as ProcessorJobPayload
    const records: DocumentProcessRecords = {
      async getFile(_scope, fileId) {
        const file = await ctx.runQuery(queryRef("documents:fileInfo"), { ...ids, fileId })
        if (!file) throw notFound("no such file")
        return file as never
      },
      ensureProcessing: async (_scope, _file, job) =>
        (await ctx.runMutation(mutationRef("documents:ensureProcessing"), {
          ...ids,
          fileId: job.fileId,
          storageKey: job.storageKey,
          sha256: job.sha256,
        })) as ProcessDocumentRow | undefined,
      setOcrJob: async (_scope, document, jobId) =>
        (await ctx.runMutation(mutationRef("documents:setOcrJob"), {
          ...ids,
          documentId: document.id,
          expectedVersion: document.version,
          jobId,
        })) as ProcessDocumentRow,
      markFailed: async (_scope, document, code, finishedAt) => {
        await ctx.runMutation(mutationRef("documents:markFailed"), {
          ...ids,
          documentId: document.id,
          expectedVersion: document.version,
          code,
          finishedAt,
        })
      },
      proposals: async (_scope, documentId) => {
        const lines = await ctx.runQuery(queryRef("documents:lineProposals"), { ...ids, documentId })
        return lines.map(({ lineKey }: { lineKey?: string }) => ({ change: { lineKey } })) as never
      },
      createProposal: async (_scope, input, idempotencyKey) => {
        await ctx.runMutation(mutationRef("documents:addLineProposal"), {
          ...ids,
          documentId: input.targetRecordId,
          input,
          idempotencyKey,
        })
      },
      finish: async (_scope, document, result) => {
        await ctx.runMutation(mutationRef("documents:finish"), {
          ...ids,
          documentId: document.id,
          expectedVersion: document.version,
          ...result,
        })
      },
    }
    try {
      await processDocumentWithRecords(
        {
          store,
          ocr: reader,
          extractor,
          maxBytes: DEFAULT_FILES_POLICY.maxBytes,
        },
        scope,
        payload,
        records,
      )
      await ctx.runMutation(mutationRef("conusaiJobs:settleAction"), {
        jobId: args.jobId,
        attempt: args.attempt,
      })
    } catch (error) {
      const retryAfterSeconds =
        error instanceof AppError && error.problem.code === "rate_limited" ? error.problem.retryAfter : undefined
      const errorCode = error instanceof AppError ? error.problem.code : error instanceof Error ? error.name : "unknown"
      await ctx.runMutation(mutationRef("conusaiJobs:settleAction"), {
        jobId: args.jobId,
        attempt: args.attempt,
        error: `documents.ocr failed (${errorCode})`,
        ...(retryAfterSeconds === undefined ? {} : { retryAfterSeconds }),
      })
    }
  },
})