/**
 * Single source of truth for reading, updating, deleting, and creating "progress comments".
 */

import type { Gitea } from "./gitea.ts";

export type ProgressCommentType = "issue";

export type ProgressComment = {
  id: number;
  type: ProgressCommentType;
};

export function parseProgressComment(
  raw: { id: string; type: ProgressCommentType } | null | undefined
): ProgressComment | undefined {
  if (!raw?.id) return undefined;
  const id = parseInt(raw.id, 10);
  if (Number.isNaN(id) || id <= 0) return undefined;
  return { id, type: raw.type };
}

interface ApiCtx {
  gitea: Gitea;
  owner: string;
  repo: string;
}

interface GiteaComment {
  id: number;
  body?: string | null;
  html_url?: string;
  node_id?: string;
}

export async function getProgressComment(
  ctx: ApiCtx,
  comment: ProgressComment
): Promise<{ id: number; body: string | undefined; html_url: string }> {
  const r = await ctx.gitea.request("GET /repos/{owner}/{repo}/issues/comments/{id}", {
    owner: ctx.owner, repo: ctx.repo, id: comment.id,
  });
  const data = r.data as GiteaComment;
  return { id: data.id, body: data.body ?? undefined, html_url: data.html_url ?? "" };
}

export async function updateProgressComment(
  ctx: ApiCtx,
  comment: ProgressComment,
  body: string
): Promise<{ id: number; body: string | undefined; html_url: string; node_id: string | undefined }> {
  const r = await ctx.gitea.request("PATCH /repos/{owner}/{repo}/issues/comments/{id}", {
    owner: ctx.owner, repo: ctx.repo, id: comment.id, body,
  });
  const data = r.data as GiteaComment;
  return { id: data.id, body: data.body ?? undefined, html_url: data.html_url ?? "", node_id: undefined };
}

export async function deleteProgressCommentApi(ctx: ApiCtx, comment: ProgressComment): Promise<void> {
  await ctx.gitea.request("DELETE /repos/{owner}/{repo}/issues/comments/{id}", {
    owner: ctx.owner, repo: ctx.repo, id: comment.id,
  });
}

export type CreateProgressCommentTarget =
  | { kind: "issue"; issueNumber: number }
  | { kind: "reviewReply"; pullNumber: number; replyToCommentId: number };

export interface CreatedProgressComment {
  comment: ProgressComment;
  body: string | undefined;
  html_url: string;
}

export async function createLeapingProgressComment(
  ctx: ApiCtx,
  target: CreateProgressCommentTarget,
  body: string
): Promise<CreatedProgressComment> {
  const issueNumber = target.kind === "issue" ? target.issueNumber : target.pullNumber;
  const r = await ctx.gitea.request("POST /repos/{owner}/{repo}/issues/{index}/comments", {
    owner: ctx.owner, repo: ctx.repo, index: issueNumber, body,
  });
  const data = r.data as GiteaComment;
  return {
    comment: { id: data.id, type: "issue" },
    body: data.body ?? undefined,
    html_url: data.html_url ?? "",
  };
}