import { Colors, Path, FS, Compress, Base64 } from "../deps.ts";
import { getMeta, IMeta, log, getConfig } from "../global.ts";
import { runHooks } from "../helper/run_script.ts";
import { ServerError } from "../helper/server_error.ts";

export default async function publish(options: { dry: boolean }) {
   const originalMeta = await getMeta();

   if (originalMeta.hooks) {
      log("Running prepublish hooks");
      await runHooks(originalMeta.hooks.prepublish);
   }

   const meta = await getMeta();

   //TODO: Output Diff between original and result meta

   if (!meta.name) throw new Error("name is not set in meta.json");
   if (!meta.version) throw new Error("version is not set in meta.json");
   if (!meta.files || !Array.isArray(meta.files) || meta.files.length <= 0)
      throw new Error("files is not set or empty in meta.json");

   const tmpDir = await Deno.makeTempDir();
   const packedFile = (await Deno.makeTempFile()) + ".tar";

   try {
      const walker = FS.walk(meta.root || ".", {
         includeDirs: false,
         includeFiles: true,
         match: meta.files.map((file) => Path.globToRegExp(file)),
      });

      log("Copying files to package to", tmpDir);

      const copy = async (path: string, abs?: boolean) => {
         const relative = abs ? path : Path.relative(meta.root || ".", path);
         log("Adding file:", path, "as", relative);
         const dest = Path.join(tmpDir, relative);
         await FS.ensureDir(Path.dirname(dest));
         await FS.copy(path, dest);
      };

      await copy("meta.json", true);

      for await (const file of walker) {
         await copy(file.path);
      }

      log("Compressing files into", packedFile);

      await Compress.Tar.compress(tmpDir, packedFile, {
         excludeSrc: true,
      });

      const url = new URL(getConfig("registry"));
      url.pathname = "/api/package/" + meta.name;

      console.log(
         "Pushing version",
         Colors.blue(meta.version),
         "to repository"
      );

      if (!options.dry) {
         log("Uploading new package version");
         await fetch(url, {
            method: "POST",
            body: await Deno.readFile(packedFile),
            headers: {
               Authorization:
                  "Basic " +
                  Base64.encode(
                     getConfig("username") + ":" + getConfig("password")
                  ),
            },
         })
            .then((res) =>
               res.status === 200
                  ? res.json()
                  : Promise.reject(new ServerError(res.statusText))
            )
            .then((res) => {
               if (!res.success) {
                  throw new ServerError(res.message);
               } else {
                  console.log(Colors.green("Upload successfull"));
               }
            })
            .catch((err) => {
               //import { ServerError } from "../helper/server_error.ts";
               if (err instanceof ServerError)
                  console.log(Colors.red("Server Error: " + err.message));
               else console.log(Colors.red("Error: " + err.message));
            });
      } else {
         console.log(Colors.yellow("Dry run. Skipping upload"));
      }

      if (meta.hooks) {
         log("Running postpublish hooks");
         await runHooks(meta.hooks.postpublish);
      }
   } finally {
      await Deno.remove(tmpDir, { recursive: true });
      await Deno.remove(packedFile);
   }
}