import { Body, Controller, Delete, Get, Path, Post, Put, Route, Security } from "tsoa";
import HttpError from "../interfaces/http-error";
import HttpStatus from "../interfaces/http-status";
import { randomUUID } from "crypto";

function getEnvVar(environmentName: string) {
  const environmentValue = process.env[environmentName];
  if (!environmentValue) throw new Error(`${environmentName} is required.`);
  return environmentValue;
}

const WINDMILL_URL = getEnvVar("WINDMILL_URL");
const WINDMILL_WORKSPACE = getEnvVar("WINDMILL_WORKSPACE");
const WINDMILL_BACKUP_FLOW_PATH = getEnvVar("WINDMILL_BACKUP_FLOW_PATH");
const WINDMILL_RESTORE_FLOW_PATH = getEnvVar("WINDMILL_RESTORE_FLOW_PATH");
const WINDMILL_BACKUP_DELETE_SCRIPT_PATH = getEnvVar("WINDMILL_BACKUP_DELETE_SCRIPT_PATH");
const WINDMILL_BACKUP_LIST_SCRIPT_PATH = getEnvVar("WINDMILL_BACKUP_LIST_SCRIPT_PATH");
const WINDMILL_API_KEY = getEnvVar("WINDMILL_API_KEY");
const DB_HOST = getEnvVar("DB_HOST");
const DB_PORT = process.env.DB_PORT;
const DB_USERNAME = getEnvVar("DB_USERNAME");
const DB_PASSWORD = getEnvVar("DB_PASSWORD");
const DB_LIST = process.env.DB_LIST;
const MAIN_MINIO_USE_SSL = getEnvVar("MAIN_MINIO_USE_SSL");
const MAIN_MINIO_HOST = getEnvVar("MAIN_MINIO_HOST");
const MAIN_MINIO_PORT = process.env.MAIN_MINIO_PORT;
const MAIN_MINIO_ACCESS_KEY = getEnvVar("MAIN_MINIO_ACCESS_KEY");
const MAIN_MINIO_SECRET_KEY = getEnvVar("MAIN_MINIO_SECRET_KEY");
const MAIN_MINIO_BUCKET = getEnvVar("MAIN_MINIO_BUCKET");
const BACKUP_MINIO_USE_SSL = getEnvVar("BACKUP_MINIO_USE_SSL");
const BACKUP_MINIO_HOST = getEnvVar("BACKUP_MINIO_HOST");
const BACKUP_MINIO_PORT = process.env.BACKUP_MINIO_PORT;
const BACKUP_MINIO_ACCESS_KEY = getEnvVar("BACKUP_MINIO_ACCESS_KEY");
const BACKUP_MINIO_SECRET_KEY = getEnvVar("BACKUP_MINIO_SECRET_KEY");
const BACKUP_MINIO_BUCKET = getEnvVar("BACKUP_MINIO_BUCKET");

function jsonParseOrPlainText(str: string) {
  try {
    return JSON.parse(str);
  } catch (_) {
    return str;
  }
}

@Route("/api/v1/backup")
// @Security("keycloak")
export class BackupController extends Controller {
  @Get()
  async listBackup() {
    const data = await fetch(
      `${WINDMILL_URL}/api/w/${WINDMILL_WORKSPACE}/jobs/run_wait_result/p/${WINDMILL_BACKUP_LIST_SCRIPT_PATH}`,
      {
        method: "POST",
        headers: {
          Authorization: `Bearer ${WINDMILL_API_KEY}`,
          "Content-Type": "application/json",
        },
        body: JSON.stringify({
          s3_backup_endpoint: `${BACKUP_MINIO_USE_SSL === "true" ? "https" : "http://"}${BACKUP_MINIO_HOST}${(BACKUP_MINIO_PORT && ":" + BACKUP_MINIO_PORT) || ""}`,
          s3_backup_access: BACKUP_MINIO_ACCESS_KEY,
          s3_backup_secret: BACKUP_MINIO_SECRET_KEY,
          s3_backup_bucket: BACKUP_MINIO_BUCKET,
        }),
      },
    ).then(async (r) => {
      const data = await r.json();
      if (typeof data === "object" && "error" in data) {
        console.error(data);
        throw new Error("Cannot get status.");
      }
      return JSON.parse(data) as { database: Record<string, any>[]; bucket: Record<string, any>[] };
    });

    return data.database.flatMap((a) =>
      a.type === "file"
        ? {
            name: a.key.replace(".sql.gz", "") as string,
            databaseSize: a.size as number,
            storageSize: data.bucket.find((b) => a.key.replace(".sql.gz", "") === b.prefix)
              ?.size as number,
            timestamp: a.lastModified as string,
          }
        : [],
    );
  }

  @Get("backup-running-list")
  async runningBackupStatus() {
    return await fetch(
      `${WINDMILL_URL}/api/w/${WINDMILL_WORKSPACE}/jobs/list?running=true&script_path_exact=${WINDMILL_BACKUP_FLOW_PATH}`,
      {
        headers: { Authorization: `Bearer ${WINDMILL_API_KEY}` },
      },
    ).then(async (r) => {
      const data = await r.json();
      if (typeof data === "object" && "error" in data) {
        console.error(data);
        throw new Error("Cannot get status.");
      }
      return data as Record<string, any>[];
    });
  }

  @Get("restore-running-list")
  async runningRestoreStatus() {
    return await fetch(
      `${WINDMILL_URL}/api/w/${WINDMILL_WORKSPACE}/jobs/list?running=true&script_path_exact=${WINDMILL_RESTORE_FLOW_PATH}`,
      {
        headers: { Authorization: `Bearer ${WINDMILL_API_KEY}` },
      },
    ).then(async (r) => jsonParseOrPlainText(await r.text()));
  }

  @Post("create")
  async runBackup(@Body() body?: { name?: string }) {
    const timestamp = Math.round(Date.now() / 1000);
    const name =
      body?.name && body.name !== "auto-backup"
        ? `${timestamp}-${body.name}`
        : `${timestamp}-manual`;

    const listRunning = await this.runningBackupStatus();

    if (!listRunning || listRunning.length > 0) {
      throw new HttpError(HttpStatus.NOT_ACCEPTABLE, "Cannot create two backup at the same time.");
    }

    return await fetch(
      `${WINDMILL_URL}/api/w/${WINDMILL_WORKSPACE}/jobs/run/f/${WINDMILL_BACKUP_FLOW_PATH}`,
      {
        method: "POST",
        headers: {
          Authorization: `Bearer ${WINDMILL_API_KEY}`,
          "Content-Type": "application/json",
        },
        body: JSON.stringify({
          backup_name: name,
          storage: {
            s3_source_endpoint: `${MAIN_MINIO_USE_SSL === "true" ? "https://" : "http://"}${MAIN_MINIO_HOST}${(MAIN_MINIO_PORT && ":" + MAIN_MINIO_PORT) || ""}`,
            s3_source_access: MAIN_MINIO_ACCESS_KEY,
            s3_source_secret: MAIN_MINIO_SECRET_KEY,
            s3_source_bucket: MAIN_MINIO_BUCKET,
            s3_dest_endpoint: `${BACKUP_MINIO_USE_SSL === "true" ? "https" : "http://"}${BACKUP_MINIO_HOST}${(BACKUP_MINIO_PORT && ":" + BACKUP_MINIO_PORT) || ""}`,
            s3_dest_access: BACKUP_MINIO_ACCESS_KEY,
            s3_dest_secret: BACKUP_MINIO_SECRET_KEY,
          },
          database: {
            s3_endpoint: `${BACKUP_MINIO_USE_SSL === "true" ? "https" : "http://"}${BACKUP_MINIO_HOST}${(BACKUP_MINIO_PORT && ":" + BACKUP_MINIO_PORT) || ""}`,
            s3_access: BACKUP_MINIO_ACCESS_KEY,
            s3_secret: BACKUP_MINIO_SECRET_KEY,
            s3_bucket: BACKUP_MINIO_BUCKET,
            db_host: DB_HOST,
            db_port: DB_PORT,
            db_user: DB_USERNAME,
            db_password: DB_PASSWORD,
            db_list: DB_LIST?.replace(",", " "),
          },
        }),
      },
    ).then(async (r) => jsonParseOrPlainText(await r.text()));
  }

  @Post("restore")
  async restoreBackup(@Body() body: { name: string }) {
    const listRunning = await this.runningRestoreStatus();

    if (!listRunning || listRunning.length > 0) {
      throw new HttpError(HttpStatus.NOT_ACCEPTABLE, "Cannot restore two backup at the same time.");
    }

    return await fetch(
      `${WINDMILL_URL}/api/w/${WINDMILL_WORKSPACE}/jobs/run/f/${WINDMILL_RESTORE_FLOW_PATH}`,
      {
        method: "POST",
        headers: {
          Authorization: `Bearer ${WINDMILL_API_KEY}`,
          "Content-Type": "application/json",
        },
        body: JSON.stringify({
          backup_name: body.name,
          storage: {
            s3_restore_endpoint: `${MAIN_MINIO_USE_SSL === "true" ? "https://" : "http://"}${MAIN_MINIO_HOST}${(MAIN_MINIO_PORT && ":" + MAIN_MINIO_PORT) || ""}`,
            s3_restore_access: MAIN_MINIO_ACCESS_KEY,
            s3_restore_secret: MAIN_MINIO_SECRET_KEY,
            s3_restore_bucket: MAIN_MINIO_BUCKET,
            s3_backup_endpoint: `${BACKUP_MINIO_USE_SSL === "true" ? "https" : "http://"}${BACKUP_MINIO_HOST}${(BACKUP_MINIO_PORT && ":" + BACKUP_MINIO_PORT) || ""}`,
            s3_backup_access: BACKUP_MINIO_ACCESS_KEY,
            s3_backup_secret: BACKUP_MINIO_SECRET_KEY,
          },
          database: {
            s3_endpoint: `${BACKUP_MINIO_USE_SSL === "true" ? "https" : "http://"}${BACKUP_MINIO_HOST}${(BACKUP_MINIO_PORT && ":" + BACKUP_MINIO_PORT) || ""}`,
            s3_access: BACKUP_MINIO_ACCESS_KEY,
            s3_secret: BACKUP_MINIO_SECRET_KEY,
            s3_bucket: BACKUP_MINIO_BUCKET,
            db_host: DB_HOST,
            db_port: DB_PORT,
            db_user: DB_USERNAME,
            db_password: DB_PASSWORD,
          },
        }),
      },
    ).then(async (r) => jsonParseOrPlainText(await r.text()));
  }

  @Delete("delete")
  async deleteBackup(@Body() body: { name: string }) {
    await fetch(
      `${WINDMILL_URL}/api/w/${WINDMILL_WORKSPACE}/jobs/run_wait_result/p/${WINDMILL_BACKUP_DELETE_SCRIPT_PATH}`,
      {
        method: "POST",
        headers: {
          Authorization: `Bearer ${WINDMILL_API_KEY}`,
          "Content-Type": "application/json",
        },
        body: JSON.stringify({
          backup_name: body.name,
          s3_backup_endpoint: `${BACKUP_MINIO_USE_SSL === "true" ? "https://" : "http://"}${BACKUP_MINIO_HOST}${(BACKUP_MINIO_PORT && ":" + BACKUP_MINIO_PORT) || ""}`,
          s3_backup_access: BACKUP_MINIO_ACCESS_KEY,
          s3_backup_secret: BACKUP_MINIO_SECRET_KEY,
          s3_backup_bucket: BACKUP_MINIO_BUCKET,
        }),
      },
    ).then(async (r) => {
      return jsonParseOrPlainText(await r.text());
    });
  }

  @Get("schedule")
  async listSchedule() {
    const result = await fetch(
      `${WINDMILL_URL}/api/w/${WINDMILL_WORKSPACE}/schedules/list?path=${WINDMILL_BACKUP_FLOW_PATH}`,
      {
        headers: {
          Authorization: `Bearer ${WINDMILL_API_KEY}`,
        },
      },
    ).then(async (r) => {
      const data = await r.json();
      if (typeof data === "object" && "error" in data) {
        console.error(data);
        throw new Error("Cannot get status.");
      }
      return data as Record<string, any>[];
    });

    return result.map((v) => ({
      id: v.path.replace("f/backup_schedule/", ""),
      name: v.summary,
      schedule: v.schedule,
      enabled: v.enabled,
      startAt: v.paused_until,
    }));
  }

  @Post("schedule")
  async createSchedule(
    @Body() body: { name: string; schedule: string; timezone?: string; startAt?: Date },
  ) {
    if (!/^[a-zA-Z0-9\-]+$/.test(body.name)) {
      throw new HttpError(HttpStatus.BAD_REQUEST, "Invalid name.");
    }

    return await fetch(`${WINDMILL_URL}/api/w/${WINDMILL_WORKSPACE}/schedules/create`, {
      method: "POST",
      headers: {
        Authorization: `Bearer ${WINDMILL_API_KEY}`,
        "Content-Type": "application/json",
      },
      body: JSON.stringify({
        schedule: body.schedule,
        summary: body.name,
        path: `f/backup_schedule/${randomUUID()}`,
        enabled: true,
        is_flow: true,
        script_path: WINDMILL_BACKUP_FLOW_PATH,
        timezone: body.timezone || "Asia/Bangkok",
        paused_until: body.startAt,
        args: {
          backup_name: body.name,
          prefix_timestamp: true,
          storage: {
            s3_source_endpoint: `${MAIN_MINIO_USE_SSL === "true" ? "https://" : "http://"}${MAIN_MINIO_HOST}${(MAIN_MINIO_PORT && ":" + MAIN_MINIO_PORT) || ""}`,
            s3_source_access: MAIN_MINIO_ACCESS_KEY,
            s3_source_secret: MAIN_MINIO_SECRET_KEY,
            s3_source_bucket: MAIN_MINIO_BUCKET,
            s3_dest_endpoint: `${BACKUP_MINIO_USE_SSL === "true" ? "https" : "http://"}${BACKUP_MINIO_HOST}${(BACKUP_MINIO_PORT && ":" + BACKUP_MINIO_PORT) || ""}`,
            s3_dest_access: BACKUP_MINIO_ACCESS_KEY,
            s3_dest_secret: BACKUP_MINIO_SECRET_KEY,
          },
          database: {
            s3_endpoint: `${BACKUP_MINIO_USE_SSL === "true" ? "https" : "http://"}${BACKUP_MINIO_HOST}${(BACKUP_MINIO_PORT && ":" + BACKUP_MINIO_PORT) || ""}`,
            s3_access: BACKUP_MINIO_ACCESS_KEY,
            s3_secret: BACKUP_MINIO_SECRET_KEY,
            s3_bucket: BACKUP_MINIO_BUCKET,
            db_host: DB_HOST,
            db_port: DB_PORT,
            db_user: DB_USERNAME,
            db_password: DB_PASSWORD,
            db_list: DB_LIST?.replace(",", " "),
          },
        },
      }),
    }).then(async (r) => jsonParseOrPlainText(await r.text()));
  }

  @Put("schedule/{id}")
  async updateSchedule(
    @Path() id: string,
    @Body()
    body: { name: string; schedule: string; enabled?: boolean; timezone?: string; startAt?: Date },
  ) {
    if (!/^[a-zA-Z0-9\-]+$/.test(body.name)) {
      throw new HttpError(HttpStatus.BAD_REQUEST, "Invalid name.");
    }

    return await fetch(
      `${WINDMILL_URL}/api/w/${WINDMILL_WORKSPACE}/schedules/update/f/backup_schedule/${id}`,
      {
        method: "POST",
        headers: {
          Authorization: `Bearer ${WINDMILL_API_KEY}`,
          "Content-Type": "application/json",
        },
        body: JSON.stringify({
          summary: body.name,
          schedule: body.schedule,
          timezone: body.timezone || "Asia/Bangkok",
          paused_until: body.startAt,
          args: {
            backup_name: body.name,
            prefix_timestamp: true,
            storage: {
              s3_source_endpoint: `${MAIN_MINIO_USE_SSL === "true" ? "https://" : "http://"}${MAIN_MINIO_HOST}${(MAIN_MINIO_PORT && ":" + MAIN_MINIO_PORT) || ""}`,
              s3_source_access: MAIN_MINIO_ACCESS_KEY,
              s3_source_secret: MAIN_MINIO_SECRET_KEY,
              s3_source_bucket: MAIN_MINIO_BUCKET,
              s3_dest_endpoint: `${BACKUP_MINIO_USE_SSL === "true" ? "https" : "http://"}${BACKUP_MINIO_HOST}${(BACKUP_MINIO_PORT && ":" + BACKUP_MINIO_PORT) || ""}`,
              s3_dest_access: BACKUP_MINIO_ACCESS_KEY,
              s3_dest_secret: BACKUP_MINIO_SECRET_KEY,
            },
            database: {
              s3_endpoint: `${BACKUP_MINIO_USE_SSL === "true" ? "https" : "http://"}${BACKUP_MINIO_HOST}${(BACKUP_MINIO_PORT && ":" + BACKUP_MINIO_PORT) || ""}`,
              s3_access: BACKUP_MINIO_ACCESS_KEY,
              s3_secret: BACKUP_MINIO_SECRET_KEY,
              s3_bucket: BACKUP_MINIO_BUCKET,
              db_host: DB_HOST,
              db_port: DB_PORT,
              db_user: DB_USERNAME,
              db_password: DB_PASSWORD,
              db_list: DB_LIST?.replace(",", " "),
            },
          },
        }),
      },
    ).then(async (r) => {
      const body = jsonParseOrPlainText(await r.text());

      if (r.status === 200) {
        await fetch(
          `${WINDMILL_URL}/api/w/${WINDMILL_WORKSPACE}/schedules/setenabled/f/backup_schedule/${id}`,
          {
            method: "POST",
            headers: {
              Authorization: `Bearer ${WINDMILL_API_KEY}`,
              "Content-Type": "application/json",
            },
            body: JSON.stringify({ enabled: body.enabled }),
          },
        );
      }

      return body;
    });
  }

  @Post("schedule/{id}/toggle")
  async toggleSchedule(@Path() id: string) {
    return await fetch(
      `${WINDMILL_URL}/api/w/${WINDMILL_WORKSPACE}/schedules/get/f/backup_schedule/${id}`,
      {
        headers: {
          Authorization: `Bearer ${WINDMILL_API_KEY}`,
          "Content-Type": "application/json",
        },
      },
    ).then(async (r) => {
      const body = jsonParseOrPlainText(await r.text());

      if (typeof body === "object") {
        const result = await fetch(
          `${WINDMILL_URL}/api/w/${WINDMILL_WORKSPACE}/schedules/setenabled/f/backup_schedule/${id}`,
          {
            method: "POST",
            headers: {
              Authorization: `Bearer ${WINDMILL_API_KEY}`,
              "Content-Type": "application/json",
            },
            body: JSON.stringify({ enabled: !body.enabled }),
          },
        );
        return jsonParseOrPlainText(await result.text());
      }
    });
  }

  @Delete("schedule/{id}")
  async deleteSchedule(@Path() id: string) {
    return await fetch(
      `${WINDMILL_URL}/api/w/${WINDMILL_WORKSPACE}/schedules/delete/f/backup_schedule/${id}`,
      {
        method: "DELETE",
        headers: {
          Authorization: `Bearer ${WINDMILL_API_KEY}`,
          "Content-Type": "application/json",
        },
      },
    ).then(async (r) => jsonParseOrPlainText(await r.text()));
  }
}