import { createRoute } from "../../../../../modules/api-utils/createRoute";
import { generatedQuotes } from "../../../../../managers/generatedQuotes";
import { apiResponse } from "../../../../../modules/api-utils/apiResponse";
import { injectPdfMetadata } from "../../../../../modules/pdf-utils";
import { ContentfulStatusCode } from "hono/utils/http-status";
import { authMiddleware } from "../../../../middleware/authorization";
import GenericError from "../../../../../Errors/GenericError";

const VALID_FETCH_ACTIONS = ["download", "print"] as const;
type FetchAction = (typeof VALID_FETCH_ACTIONS)[number];

/* GET /v1/sales/opportunities/:identifier/quote/:quoteId/download?fetchAction=download|print */
export default createRoute(
  "get",
  ["/opportunities/:identifier/quote/:quoteId/download"],
  async (c) => {
    const quoteId = c.req.param("quoteId");
    const user = c.get("user");
    const fetchAction = c.req.query("fetchAction") as FetchAction | undefined;

    if (!fetchAction || !VALID_FETCH_ACTIONS.includes(fetchAction)) {
      throw new GenericError({
        status: 400,
        name: "InvalidFetchAction",
        message: `Query parameter 'fetchAction' is required and must be one of: ${VALID_FETCH_ACTIONS.join(", ")}`,
      });
    }

    const downloadedAt = new Date().toISOString();

    const quote = await generatedQuotes.recordDownload(quoteId, {
      id: user.id,
      name: user.name,
      email: user.email,
      fetchAction,
    });

    // Inject download-time metadata into the PDF's document properties
    const pdfWithMetadata = await injectPdfMetadata(quote.quoteFile, {
      downloadedAt,
      downloadedById: user.id,
      downloadedByName: user.name ?? undefined,
      downloadedByEmail: user.email ?? undefined,
    });

    const response = apiResponse.successful("Quote downloaded successfully!", {
      id: quote.id,
      quoteFileName: quote.quoteFileName,
      mimeType: "application/pdf",
      contentBase64: Buffer.from(pdfWithMetadata).toString("base64"),
    });
    return c.json(response, response.status as ContentfulStatusCode);
  },
  authMiddleware({ permissions: ["sales.opportunity.quote.download"] }),
);