// The handlers of the knowledge module's procedures: each resolves its ports from the request's
// container and calls one use case. No rule lives here.

import type { Container } from "@conusai-kit/core"
import { implement } from "@conusai-kit/core"
import { DATA_SOURCE } from "@conusai-kit/data"
import { filesDeps } from "@conusai-kit/files"
import {
  autoIndexGet,
  autoIndexSet,
  collectionCreate,
  collectionList,
  documentGetMany,
  documentIndex,
  documentList,
  documentRemove,
  knowledgeSearch,
  knowledgeStatus,
  settingsDisableDocumentAi,
  settingsEnableDocumentAi,
  settingsGet,
} from "../contract/index.js"
import { getAutoIndex, setAutoIndex } from "../core/auto-index.js"
import { createCollection, listCollections } from "../core/collections.js"
import { getManyDocuments, listDocuments, requestIndex, requestRemove } from "../core/documents.js"
import {
  flagsOf,
  KNOWLEDGE_ENABLEMENT,
  KNOWLEDGE_PASSAGES,
  KNOWLEDGE_READER,
  KNOWLEDGE_READINESS,
  KNOWLEDGE_SEARCH,
  type KnowledgeDeps,
} from "../core/ports.js"
import { searchKnowledge } from "../core/search.js"
import { disableDocumentAi, enableDocumentAi, getSettings, type SettingsDeps } from "../core/settings.js"
import { type KnowledgeStatusDeps, knowledgeStatusOf } from "../core/status.js"
import { knowledgeRefusal } from "./refusals.js"

/** The ports a write or read handler needs. Never the search service: that port is an effect, and
 * resolving it from either is a kind violation. */
export function knowledgeDeps(container: Container): KnowledgeDeps {
  const data = container.resolve(DATA_SOURCE)
  return { data, files: filesDeps(container), flags: flagsOf(container, data) }
}

/**
 * The effect handler's deps: the search service, bound in the processes that may leave the process, and the
 * PDF intake's reader, passage index and enablement checks where the worker binds the reader (the jobs; a
 * request never reads a PDF).
 */
export function knowledgeSearchDeps(container: Container): KnowledgeDeps {
  return {
    ...knowledgeDeps(container),
    search: container.resolve(KNOWLEDGE_SEARCH),
    ...(container.has(KNOWLEDGE_READER) ? { reader: container.resolve(KNOWLEDGE_READER) } : {}),
    ...(container.has(KNOWLEDGE_PASSAGES) ? { passages: container.resolve(KNOWLEDGE_PASSAGES) } : {}),
    ...(container.has(KNOWLEDGE_READER) ? { enablement: container.resolve(KNOWLEDGE_ENABLEMENT) } : {}),
  }
}

/** The status read's deps: the backend's readiness, which a read may resolve, instead of the search service. */
function knowledgeStatusDeps(container: Container): KnowledgeStatusDeps {
  const data = container.resolve(DATA_SOURCE)
  return {
    data,
    flags: flagsOf(container, data),
    ...(container.has(KNOWLEDGE_READINESS) ? { readiness: container.resolve(KNOWLEDGE_READINESS) } : {}),
  }
}

/** The enablement flow's deps, for the effect that leaves the process. The other settings procedures read and write the module's own row. */
function settingsDeps(container: Container): SettingsDeps {
  return { data: container.resolve(DATA_SOURCE), platform: container.resolve(KNOWLEDGE_ENABLEMENT) }
}

const settingsDataOf = (container: Container) => ({ data: container.resolve(DATA_SOURCE) })

export const collectionListImpl = implement(collectionList, ({ ctx }) =>
  listCollections(knowledgeDeps(ctx.container), ctx.scope),
)

export const collectionCreateImpl = implement(collectionCreate, ({ input, ctx }) =>
  createCollection(knowledgeDeps(ctx.container), ctx.scope, input.name),
)

export const documentIndexImpl = implement(documentIndex, ({ input, ctx }) =>
  requestIndex(knowledgeDeps(ctx.container), ctx.scope, input),
)

export const documentListImpl = implement(documentList, ({ input, ctx }) =>
  listDocuments(knowledgeDeps(ctx.container), ctx.scope, input.collectionName),
)

export const documentGetManyImpl = implement(documentGetMany, async ({ input, ctx }) => ({
  items: await getManyDocuments(knowledgeDeps(ctx.container), ctx.scope, input.ids),
}))

export const documentRemoveImpl = implement(documentRemove, ({ input, ctx }) =>
  requestRemove(knowledgeDeps(ctx.container), ctx.scope, input),
)

export const knowledgeSearchImpl = implement(knowledgeSearch, async ({ input, ctx }) => {
  try {
    return await searchKnowledge(knowledgeSearchDeps(ctx.container), ctx.scope, {
      collectionName: input.collectionName,
      query: input.query,
      ...(input.limit === undefined ? {} : { limit: input.limit }),
    })
  } catch (error) {
    throw knowledgeRefusal(error)
  }
})

export const knowledgeStatusImpl = implement(knowledgeStatus, ({ ctx }) =>
  knowledgeStatusOf(knowledgeStatusDeps(ctx.container), ctx.scope),
)

export const settingsGetImpl = implement(settingsGet, ({ ctx }) =>
  getSettings(settingsDataOf(ctx.container), ctx.scope),
)

export const settingsEnableDocumentAiImpl = implement(settingsEnableDocumentAi, async ({ ctx }) => {
  const settings = await enableDocumentAi(settingsDeps(ctx.container), ctx.scope)
  return { enabled: settings.enabled, backend: settings.backend ?? "platform" }
})

export const settingsDisableDocumentAiImpl = implement(settingsDisableDocumentAi, ({ ctx }) =>
  disableDocumentAi(settingsDataOf(ctx.container), ctx.scope),
)

export const autoIndexGetImpl = implement(autoIndexGet, ({ ctx }) =>
  getAutoIndex(settingsDataOf(ctx.container), ctx.scope),
)

export const autoIndexSetImpl = implement(autoIndexSet, ({ input, ctx }) =>
  setAutoIndex(knowledgeDeps(ctx.container), ctx.scope, input.collectionName),
)

export const KNOWLEDGE_PROCEDURE_IMPLS = [
  collectionListImpl,
  collectionCreateImpl,
  documentIndexImpl,
  documentListImpl,
  documentGetManyImpl,
  documentRemoveImpl,
  knowledgeSearchImpl,
  knowledgeStatusImpl,
  settingsGetImpl,
  settingsEnableDocumentAiImpl,
  settingsDisableDocumentAiImpl,
  autoIndexGetImpl,
  autoIndexSetImpl,
]