/**
 * @copyright NHCarrigan
 * @license Naomi's Public License
 * @author Naomi Carrigan
 */
import { readFile } from "node:fs/promises";
import { join } from "node:path";
import { input, select } from "@inquirer/prompts";
import { paginatedFetch } from "../utils/paginatedFetch.js";
import type { File, Repository } from "../interfaces/gitea.js";

const giteaToken = process.env.GITEA_TOKEN;
if (giteaToken === undefined) {
  throw new Error("GITEA_TOKEN is not set");
}

const giteaUrl = "https://git.nhcarrigan.com";

/**
 * Will be something like "actions.yml" or "gitea/actions.yml".
 */
const fileName = await input({
  message:
    // eslint-disable-next-line stylistic/max-len -- Big boi string.
    "Enter the name of the file to upload. Your file MUST be in the `data` directory in this repository. WITHOUT leading slash. Example: 'actions.yml' or 'gitea/actions.yml'",
});
if (fileName === "") {
  throw new Error("File name is not set");
}

const file = await readFile(
  join(import.meta.dirname, "..", "..", "data", fileName),
  "utf-8",
);

/**
 * Will be something like ".gitea/workflows/security.yml".
 */
const uploadPath = await input({
  message:
    // eslint-disable-next-line stylistic/max-len -- Big boi string.
    "Enter the PATH to upload the file to, WITHOUT leading slash. Example: '.gitea/workflows/security.yml'",
});
if (uploadPath === "") {
  throw new Error("Upload path is not set");
}

/**
 * The file path to check for in each repo to determine if upload should proceed.
 * Will be something like ".gitea/workflows/ci.yml" or "package.json".
 */
const conditionFilePath = await input({
  message:
    // eslint-disable-next-line stylistic/max-len -- Big boi string.
    "Enter the file path to check for in each repo (condition file). WITHOUT leading slash. Example: '.gitea/workflows/ci.yml' or 'package.json'",
});
if (conditionFilePath === "") {
  throw new Error("Condition file path is not set");
}

/**
 * Whether to upload when the condition file exists or doesn't exist.
 */
const uploadCondition = await select({
  choices: [
    { name: "Upload if condition file EXISTS", value: "exists" },
    { name: "Upload if condition file DOES NOT EXIST", value: "not_exists" },
  ],
  message: "When should the upload proceed?",
});

const orgs = [ "nhcarrigan", "nhcarrigan-private", "nhcarrigan-games" ];

let totalReposProcessed = 0;
let totalReposSucceeded = 0;
let totalReposFailed = 0;
let totalReposSkipped = 0;

for (const org of orgs) {
  console.log(`\n=== Fetching repositories for org: ${org} ===`);
  const repos = await paginatedFetch<Array<Repository>>(`${giteaUrl}/api/v1/orgs/${org}/repos`, 100, { headers: { authorization: `Bearer ${giteaToken}` } });
  console.log(`Found ${repos.length.toString()} repositories in ${org}`);

  for (const repo of repos) {
    totalReposProcessed = totalReposProcessed + 1;
    console.log(`Checking condition file in ${org}/${repo.name}`);

    // Check if condition file exists
    const conditionFileResponse = await fetch(`${giteaUrl}/api/v1/repos/${org}/${repo.name}/contents/${conditionFilePath}`, {
      headers: {
        authorization: `Bearer ${giteaToken}`,
      },
      method: "GET",
    });

    const conditionFileExists = conditionFileResponse.ok;
    const shouldUpload = uploadCondition === "exists"
      ? conditionFileExists
      : !conditionFileExists;

    if (!shouldUpload) {
      totalReposSkipped = totalReposSkipped + 1;
      console.log(`Skipping ${org}/${repo.name} (condition file ${conditionFileExists
        ? "exists"
        : "does not exist"}, but upload condition is "${uploadCondition}")`);
      continue;
    }

    console.log(`Condition met for ${org}/${repo.name}, proceeding with upload`);
    console.log(`Checking if upload file exists in ${org}/${repo.name}`);
    const fileResponse = await fetch(`${giteaUrl}/api/v1/repos/${org}/${repo.name}/contents/${uploadPath}`, {
      headers: {
        authorization: `Bearer ${giteaToken}`,
      },
      method: "GET",
    });
    if (fileResponse.ok) {
      console.log(`File already exists in ${org}/${repo.name}`);
      const fileData: File = await fileResponse.json();
      console.log(`Updating ${fileName} in ${org}/${repo.name}`);
      const response = await fetch(`${giteaUrl}/api/v1/repos/${org}/${repo.name}/contents/${uploadPath}`, {
        body: JSON.stringify({
          branch:  repo.default_branch,
          content: Buffer.from(file).toString("base64"),
          message: `feat: automated upload of ${uploadPath}`,
          sha:     fileData.sha,
        }),
        headers: {
          "authorization": `Bearer ${giteaToken}`,
          // eslint-disable-next-line @typescript-eslint/naming-convention -- Standard header convention.
          "content-type":  "application/json",
        },
        method: "PUT",
      });
      if (!response.ok) {
        totalReposFailed = totalReposFailed + 1;
        console.error(`Failed to update ${fileName} in ${org}/${repo.name}: ${response.statusText}`);
        console.error(await response.text());
        continue;
      }
      totalReposSucceeded = totalReposSucceeded + 1;
      console.log(`Updated ${fileName} in ${org}/${repo.name}`);
      continue;
    }
    console.log(`Uploading ${fileName} to ${org}/${repo.name}`);
    const response = await fetch(`${giteaUrl}/api/v1/repos/${org}/${repo.name}/contents/${uploadPath}`, {
      body: JSON.stringify({
        branch:  repo.default_branch,
        content: Buffer.from(file).toString("base64"),
        message: `feat: automated upload of ${uploadPath}`,
      }),
      headers: {
        "authorization": `Bearer ${giteaToken}`,
        // eslint-disable-next-line @typescript-eslint/naming-convention -- Standard header convention.
        "content-type":  "application/json",
      },
      method: "POST",
    });
    if (!response.ok) {
      totalReposFailed = totalReposFailed + 1;
      console.error(`Failed to upload ${fileName} to ${org}/${repo.name}: ${response.statusText}`);
      console.error(await response.text());
      continue;
    }
    totalReposSucceeded = totalReposSucceeded + 1;
    console.log(`Uploaded ${fileName} to ${org}/${repo.name}`);
  }
}

console.log(`\n=== Summary ===`);
console.log(`Total repositories processed: ${totalReposProcessed.toString()}`);
console.log(`Successfully uploaded/updated: ${totalReposSucceeded.toString()}`);
console.log(`Failed: ${totalReposFailed.toString()}`);
console.log(`Skipped (condition not met): ${totalReposSkipped.toString()}`);