import { commentHistory, getCommentViewer, listComments, mutateComment, requireCommentViewer } from "@/lib/comments/repository";
import { commentBanSchema, heartSchema, moderationSchema, reactionSchema } from "@/lib/comments/validation";
import { errorResponse, HttpError, readJson, requireSameOrigin } from "@/lib/security/http";
import { limitRequest } from "@/lib/security/rate-limit";

type Context = { params: Promise<{ id: string; action: string }> };
export async function GET(request: Request, context: Context) {
  try {
    const { id, action } = await context.params;
    const viewer = await getCommentViewer();
    const cursor = new URL(request.url).searchParams.get("cursor");
    const result = action === "history" ? await commentHistory(id, viewer, cursor)
      : action === "replies" ? await listComments({ viewer, rootId: id, cursor, target: new URL(request.url).searchParams.get("target") ?? undefined })
      : null;
    if (!result) throw new HttpError(404, "not-found");
    return Response.json(result, { headers: { "Cache-Control": "private, no-store" } });
  } catch (cause) { return errorResponse(cause); }
}
export async function PUT(request: Request, context: Context) {
  try {
    requireSameOrigin(request);
    const viewer = await requireCommentViewer();
    await limitRequest("comment-mutate", viewer.id, 60);
    const { id, action } = await context.params;
    const body = await readJson(request);
    if (action === "reaction") {
      const value = reactionSchema.safeParse(body);
      if (!value.success) throw new HttpError(400, "invalid-reaction");
      await mutateComment(id, viewer, "reaction", value.data.value);
    } else if (action === "moderation") {
      const value = moderationSchema.safeParse(body);
      if (!value.success) throw new HttpError(400, "invalid-moderation");
      await mutateComment(id, viewer, "moderation", value.data.hidden);
    } else if (action === "ban") {
      const value = commentBanSchema.safeParse(body);
      if (!value.success) throw new HttpError(400, "invalid-moderation");
      await mutateComment(id, viewer, "ban", value.data.banned);
    } else if (action === "heart") {
      const value = heartSchema.safeParse(body);
      if (!value.success) throw new HttpError(400, "invalid-heart");
      await mutateComment(id, viewer, "heart", value.data.hearted);
    } else throw new HttpError(404, "not-found");
    return Response.json({ ok: true });
  } catch (cause) { return errorResponse(cause); }
}