// The proposal target of this module: the code that writes an approved line.
//
// kit-proposals runs `apply` inside the approving transaction, on the approver's own repositories,
// so the line and the proposal's new status commit together or not at all. That is the only way a
// row reaches `documents_line`, which is why the export, which reads that table alone, cannot
// contain a line nobody approved.

import { notFound } from "@conusai-kit/core"
import type { ProposalTarget } from "@conusai-kit/proposals"
import { documents, LINE_TARGET_KEY, lineChangeSchema, lines } from "../contract/index.js"

export const lineTarget: ProposalTarget = {
  key: LINE_TARGET_KEY,
  change: lineChangeSchema,
  // Checked before `apply` runs, so approving a proposal is never a way around this module's own
  // write permission (decision AT-D29).
  permission: "documents.line.approve",
  async apply(tx, scope, write) {
    if (write.targetRecordId === null) throw notFound("no such document")
    const change = lineChangeSchema.parse(write.change)
    const document = await tx.of(documents).get(write.targetRecordId)
    if (!document) throw notFound("no such document")
    const line = await tx.of(lines).insert({
      documentId: document.id,
      proposalId: write.proposalId,
      label: change.label,
      value: change.value,
      page: change.page,
      position: change.position,
      quote: change.quote,
      edited: change.edited,
      approvedBy: scope.actor.userId,
    })
    return { recordId: line.id }
  },
}