type Bitbucket = {

  username: string;

  password: string;

};

/**

 * Compare two commits

 * Produces a raw git-style diff.

 */

export async function main(

  auth: Bitbucket,

  repo_slug: string,

  spec: string,

  workspace: string,

  context: string | undefined,

  path: string | undefined,

  ignore_whitespace: string | undefined,

  binary: string | undefined,

  renames: string | undefined,

  merge: string | undefined,

  topic: string | undefined

) {

  const url = new URL(

    `https://api.bitbucket.org/2.0/repositories/${workspace}/${repo_slug}/diff/${spec}`

  );

  for (const [k, v] of [

    ["context", context],

    ["path", path],

    ["ignore_whitespace", ignore_whitespace],

    ["binary", binary],

    ["renames", renames],

    ["merge", merge],

    ["topic", topic],

  ]) {

    if (v !== undefined && v !== "") {

      url.searchParams.append(k, v);

    }

  }

  const response = await fetch(url, {

    method: "GET",

    headers: {

      Authorization: "Basic " + btoa(`${auth.username}:${auth.password}`),

    },

    body: undefined,

  });

  if (!response.ok) {

    const text = await response.text();

    throw new Error(`${response.status} ${text}`);

  }

  return await response.text();

}