import { Process } from "@yao/runtime";

/**
 * Excel class for manipulating Excel files via Yao's Excel Module
 */
export class Excel {
  private handle: string | null = null;

  /**
   * Creates a new Excel instance
   * @param file Path to the Excel file
   */
  constructor(private file: string, writable: boolean = false) {
    this.file = file;
    this.Open(writable);
  }

  /**
   * Read each sheet top n rows
   * @param file Path to the Excel file
   * @param n number of rows to read
   * @returns Object with sheet names as keys and arrays of row values as values
   */
  static Heads(
    file: string,
    n: number = 5,
    filters?: string[]
  ): Record<string, any[][]> {
    const excel = new Excel(file);
    const heads = excel.Heads(n, filters);
    excel.Close();
    return heads;
  }

  /**
   * Read each sheet top n rows
   * @param n number of rows to read
   * @returns Object with sheet names as keys and arrays of row values as values
   * @throws Error if file not opened
   */
  Heads(n: number = 5, filters: string[] = []): Record<string, any[][]> {
    if (!this.handle) throw new Error("Excel file not opened");

    const sheets = this.Sheets();
    const result: Record<string, any[][]> = {};

    for (const sheet of sheets) {
      if (filters.length > 0 && !filters.includes(sheet)) {
        continue;
      }

      // Open row iterator for the sheet
      const iterator = this.each.OpenRow(sheet);
      const rows: any[][] = [];

      // Read n rows
      let row;
      let count = 0;
      while (
        count < n &&
        (row = Process(`excel.each.NextRow`, iterator)) !== null
      ) {
        // Add column headers (A, B, C, ...) for the first row
        if (count === 0) {
          const headerRow = [];
          for (let i = 0; i < row.length; i++) {
            headerRow.push(this.convert.ColumnNumberToName(i + 1));
          }
          rows.push(headerRow);
        }

        // Trim Each cell's value
        row = row.map((cell) => cell?.trim?.());
        rows.push(row);
        count++;
      }

      // Close the row iterator
      this.each.CloseRow(iterator);

      // Find the max length of each row, and pad the column headers(A, B, C, ...) to the same length
      const maxLength = Math.max(...rows.map((row) => row.length));
      const start = rows[0].length;
      const neededLength = maxLength - rows[0].length;
      for (let i = 0; i < neededLength; i++) {
        rows[0].push(this.convert.ColumnNumberToName(start + i + 1));
      }

      // Add the sheet's rows to the result
      result[sheet] = rows;
    }

    return result;
  }

  /**
   * Check if a sheet exists in the Excel file
   * @param file Path to the Excel file
   * @param sheet Sheet name to check
   * @returns boolean - true if sheet exists, false otherwise
   */
  static Exists(file: string, sheet: string) {
    const excel = new Excel(file);
    const exists = excel.sheet.Exists(sheet);
    excel.Close();
    return exists;
  }

  /**
   * Opens an Excel file for reading or writing
   * @param writable Whether to open in writable mode (true) or read-only mode (false)
   * @returns Handle ID used for subsequent operations
   */
  Open(writable: boolean = false) {
    this.handle = Process(`excel.Open`, this.file, writable);
    return this.handle;
  }

  /**
   * Closes the Excel file and releases resources
   * IMPORTANT: Always call this method when done to prevent memory leaks
   */
  Close() {
    if (this.handle) {
      Process(`excel.Close`, this.handle);
      this.handle = null;
    }
  }

  /**
   * Saves changes to the Excel file
   * @throws Error if file not opened
   */
  Save() {
    if (!this.handle) throw new Error("Excel file not opened");
    return Process(`excel.Save`, this.handle);
  }

  /**
   * Gets all sheet names in the workbook
   * @returns Array of sheet names
   * @throws Error if file not opened
   */
  Sheets() {
    if (!this.handle) throw new Error("Excel file not opened");
    return Process(`excel.Sheets`, this.handle);
  }

  // Sheet operations
  sheet = {
    /**
     * Creates a new sheet in the workbook
     * @param name Name for the new sheet
     * @returns number Index of the new sheet
     * @throws Error if file not opened
     */
    Create: (name: string) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.sheet.create`, this.handle, name);
    },

    /**
     * Lists all sheets in the workbook
     * @returns string[] Array of sheet names
     * @throws Error if file not opened
     */
    List: () => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.sheet.list`, this.handle);
    },

    /**
     * Checks if a sheet exists in the workbook
     * @param name Sheet name to check
     * @returns boolean - true if sheet exists, false otherwise
     * @throws Error if file not opened
     */
    Exists: (name: string) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.sheet.exists`, this.handle, name);
    },

    /**
     * Reads all data from a sheet
     * @param name Sheet name
     * @returns any[][] Two-dimensional array of cell values
     * @throws Error if file not opened
     */
    Read: (name: string) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.sheet.read`, this.handle, name);
    },

    /**
     * Reads all data from a sheet with pagination support
     * @param name Sheet name
     * @param from Starting row index (0-based)
     * @param chunk_size Number of rows to read
     * @returns any[][] Two-dimensional array of cell values
     * @throws Error if file not opened
     */
    Rows: (name: string, from: number, chunk_size: number) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.sheet.rows`, this.handle, name, from, chunk_size);
    },

    /**
     * Updates data in a sheet. Creates the sheet if it doesn't exist.
     * @param name Sheet name
     * @param data Two-dimensional array of values to write
     * @throws Error if file not opened
     */
    Update: (name: string, data: any[][]) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.sheet.update`, this.handle, name, data);
    },

    /**
     * Copies a sheet with all its content and formatting
     * @param source Source sheet name
     * @param target Target sheet name (must not exist)
     * @throws Error if file not opened
     */
    Copy: (source: string, target: string) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.sheet.copy`, this.handle, source, target);
    },

    /**
     * Deletes a sheet from the workbook
     * @param name Sheet name to delete
     * @throws Error if file not opened
     */
    Delete: (name: string) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.sheet.delete`, this.handle, name);
    },

    /**
     * Gets the dimensions (number of rows and columns) of a sheet
     * @param name Sheet name
     * @returns {rows: number, cols: number} - Object containing row and column counts
     * @throws Error if file not opened
     */
    Dimension: (name: string) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.sheet.dimension`, this.handle, name);
    },
  };

  // Reading operations
  read = {
    /**
     * Reads a cell's value
     * @param sheet Sheet name
     * @param cell Cell reference (e.g. "A1")
     * @returns Cell value
     * @throws Error if file not opened
     */
    Cell: (sheet: string, cell: string) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.read.Cell`, this.handle, sheet, cell);
    },

    /**
     * Reads all rows in a sheet
     * @param sheet Sheet name
     * @returns Two-dimensional array of cell values
     * @throws Error if file not opened
     */
    Row: (sheet: string) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.read.Row`, this.handle, sheet);
    },

    /**
     * Reads all columns in a sheet
     * @param sheet Sheet name
     * @returns Two-dimensional array of cell values
     * @throws Error if file not opened
     */
    Column: (sheet: string) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.read.Column`, this.handle, sheet);
    },
  };

  // Writing operations
  write = {
    /**
     * Writes a value to a cell
     * @param sheet Sheet name
     * @param cell Cell reference (e.g. "A1")
     * @param value Value to write (string, number, boolean, etc.)
     * @throws Error if file not opened
     */
    Cell: (sheet: string, cell: string, value: any) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.write.Cell`, this.handle, sheet, cell, value);
    },

    /**
     * Writes values to a row starting at the specified cell
     * @param sheet Sheet name
     * @param startCell Starting cell reference (e.g. "A1")
     * @param values Array of values to write
     * @throws Error if file not opened
     */
    Row: (sheet: string, startCell: string, values: any[]) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.write.Row`, this.handle, sheet, startCell, values);
    },

    /**
     * Writes values to a column starting at the specified cell
     * @param sheet Sheet name
     * @param startCell Starting cell reference (e.g. "A1")
     * @param values Array of values to write
     * @throws Error if file not opened
     */
    Column: (sheet: string, startCell: string, values: any[]) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(
        `excel.write.Column`,
        this.handle,
        sheet,
        startCell,
        values
      );
    },

    /**
     * Writes a two-dimensional array of values starting at the specified cell
     * @param sheet Sheet name
     * @param startCell Starting cell reference (e.g. "A1")
     * @param values Two-dimensional array of values to write
     * @throws Error if file not opened
     */
    All: (sheet: string, startCell: string, values: any[][]) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.write.All`, this.handle, sheet, startCell, values);
    },
  };

  // Setting properties
  set = {
    /**
     * Applies a style to a cell
     * @param sheet Sheet name
     * @param cell Cell reference (e.g. "A1")
     * @param styleID Style ID to apply
     * @throws Error if file not opened
     */
    Style: (sheet: string, cell: string, styleID: number) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.set.Style`, this.handle, sheet, cell, styleID);
    },

    /**
     * Sets a row's height
     * @param sheet Sheet name
     * @param row Row number
     * @param height Height in points
     * @throws Error if file not opened
     */
    RowHeight: (sheet: string, row: number, height: number) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.set.RowHeight`, this.handle, sheet, row, height);
    },

    /**
     * Sets column width for a range of columns
     * @param sheet Sheet name
     * @param startCol Starting column letter
     * @param endCol Ending column letter
     * @param width Width in points
     * @throws Error if file not opened
     */
    ColumnWidth: (
      sheet: string,
      startCol: string,
      endCol: string,
      width: number
    ) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(
        `excel.set.ColumnWidth`,
        this.handle,
        sheet,
        startCol,
        endCol,
        width
      );
    },

    /**
     * Merges cells in a range
     * @param sheet Sheet name
     * @param startCell Starting cell reference (e.g. "A1")
     * @param endCell Ending cell reference (e.g. "B2")
     * @throws Error if file not opened
     */
    MergeCell: (sheet: string, startCell: string, endCell: string) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(
        `excel.set.MergeCell`,
        this.handle,
        sheet,
        startCell,
        endCell
      );
    },

    /**
     * Unmerges previously merged cells
     * @param sheet Sheet name
     * @param startCell Starting cell reference (e.g. "A1")
     * @param endCell Ending cell reference (e.g. "B2")
     * @throws Error if file not opened
     */
    UnmergeCell: (sheet: string, startCell: string, endCell: string) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(
        `excel.set.UnmergeCell`,
        this.handle,
        sheet,
        startCell,
        endCell
      );
    },

    /**
     * Sets a formula in a cell
     * @param sheet Sheet name
     * @param cell Cell reference (e.g. "C1")
     * @param formula Excel formula without the leading equals sign
     * @throws Error if file not opened
     */
    Formula: (sheet: string, cell: string, formula: string) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.set.Formula`, this.handle, sheet, cell, formula);
    },

    /**
     * Adds a hyperlink to a cell
     * @param sheet Sheet name
     * @param cell Cell reference (e.g. "A1")
     * @param url URL for the hyperlink
     * @param text Display text for the hyperlink
     * @throws Error if file not opened
     */
    Link: (sheet: string, cell: string, url: string, text: string) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.set.Link`, this.handle, sheet, cell, url, text);
    },
  };

  // Iteration methods
  each = {
    /**
     * Opens a row iterator
     * @param sheet Sheet name
     * @returns Row iterator ID
     * @throws Error if file not opened
     */
    OpenRow: (sheet: string) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.each.OpenRow`, this.handle, sheet);
    },

    /**
     * Gets the next row from the iterator
     * @param rowID Row iterator ID from excel.each.OpenRow
     * @returns Array of cell values or null if no more rows
     */
    NextRow: (rowID: string) => {
      return Process(`excel.each.NextRow`, rowID);
    },

    /**
     * Closes the row iterator
     * @param rowID Row iterator ID from excel.each.OpenRow
     */
    CloseRow: (rowID: string) => {
      return Process(`excel.each.CloseRow`, rowID);
    },

    /**
     * Opens a column iterator
     * @param sheet Sheet name
     * @returns Column iterator ID
     * @throws Error if file not opened
     */
    OpenColumn: (sheet: string) => {
      if (!this.handle) throw new Error("Excel file not opened");
      return Process(`excel.each.OpenColumn`, this.handle, sheet);
    },

    /**
     * Gets the next column from the iterator
     * @param colID Column iterator ID from excel.each.OpenColumn
     * @returns Array of cell values or null if no more columns
     */
    NextColumn: (colID: string) => {
      return Process(`excel.each.NextColumn`, colID);
    },

    /**
     * Closes the column iterator
     * @param colID Column iterator ID from excel.each.OpenColumn
     */
    CloseColumn: (colID: string) => {
      return Process(`excel.each.CloseColumn`, colID);
    },
  };

  // Conversion utilities
  convert = {
    /**
     * Converts a column name to a column number
     * @param colName Column name (e.g. "A", "AB")
     * @returns Column number (1-based)
     */
    ColumnNameToNumber: (colName: string) => {
      return Process(`excel.convert.ColumnNameToNumber`, colName);
    },

    /**
     * Converts a column number to a column name
     * @param colNum Column number (1-based)
     * @returns Column name
     */
    ColumnNumberToName: (colNum: number) => {
      return Process(`excel.convert.ColumnNumberToName`, colNum);
    },

    /**
     * Converts a cell reference to coordinates
     * @param cell Cell reference (e.g. "A1")
     * @returns Array with [columnNumber, rowNumber] (1-based)
     */
    CellNameToCoordinates: (cell: string) => {
      return Process(`excel.convert.CellNameToCoordinates`, cell);
    },

    /**
     * Converts coordinates to a cell reference
     * @param col Column number (1-based)
     * @param row Row number (1-based)
     * @returns Cell reference
     */
    CoordinatesToCellName: (col: number, row: number) => {
      return Process(`excel.convert.CoordinatesToCellName`, col, row);
    },
  };
}
/**
 * Volcengine OpenAPI SDK
 */
import { Exception, http, Process } from "@yao/runtime";

export class Volcengine {
  private AccessKeyId: string;
  private SecretAccessKey: string;
  private Region: string;
  private Service: string;
  private Endpoint: string;
  constructor(option: Option) {
    this.AccessKeyId = option.AccessKeyId;
    this.SecretAccessKey = option.SecretAccessKey;
    this.Region = option.Region;
    this.Service = option.Service;
    this.Endpoint = option.Endpoint
      ? `https://${option.Endpoint}`
      : `https://${this.Service}.${this.Region}.volcengineapi.com`;
  }

  public Get(query: Record<string, string>) {
    const url = this.Endpoint;
    const host = url.split("://")[1].split("/")[0];
    const headers = { host: host };
    const request: Request = {
      Method: "GET",
      URI: "/",
      Query: query,
      Headers: headers,
      Payload: null,
    };

    const auth = this.getAuthorization(request);

    // Add authorization header
    headers["Authorization"] = auth;
    headers["Content-Type"] = "application/json";

    const resp = http.Get(url, query, headers);
    if (resp.code > 299 || resp.code < 200) {
      const { ResponseMetadata } = resp.data || {};
      const { Error } = ResponseMetadata || {};
      const message =
        Error?.Message || (resp.code === 0 ? resp.message : "Unknown error");
      throw new Exception(message, resp.code);
    }

    return resp.data;
  }

  /**
   * Post request
   * @param query Query parameters
   * @param payload Payload
   * @returns Response
   */
  public Post(query: Record<string, string>, payload: Record<string, any>) {
    const url = this.Endpoint;
    const host = url.split("://")[1].split("/")[0];
    const headers = { host: host };
    const body = JSON.stringify(payload);
    const request: Request = {
      Method: "POST",
      URI: "/",
      Query: query,
      Headers: headers,
      Payload: body,
    };

    const auth = this.getAuthorization(request);
    headers["Authorization"] = auth;
    headers["Content-Type"] = "application/json";

    const resp = http.Post(url, body, null, query, headers);
    if (resp.code > 299 || resp.code < 200) {
      const { ResponseMetadata } = resp.data || {};
      const { Error } = ResponseMetadata || {};
      const message =
        Error?.Message || (resp.code === 0 ? resp.message : "Unknown error");
      throw new Exception(message, resp.code);
    }
    return resp.data;
  }

  /**
   * Create a canonical request
   * @param request Request object
   * @returns Canonical request string
   */
  private canonicalRequest(request: Request): string {
    const xDate = this.formatDate(new Date());

    // 1. HTTP Method
    const method = request.Method;

    // 2. URI (default to '/' if null)
    const uri = request.URI || "/";

    // 3. Query String
    let queryString = "";
    if (request.Query) {
      if (Array.isArray(request.Query)) {
        // Handle array of query parameters
        const queryParams = request.Query.reduce((acc: string[], curr) => {
          Object.entries(curr).forEach(([key, value]) => {
            if (value !== null && value !== undefined && value !== "") {
              acc.push(
                `${encodeURIComponent(key)}=${encodeURIComponent(value)}`
              );
            }
          });
          return acc;
        }, []);
        queryString = queryParams.sort().join("&");
      } else {
        // Handle single query object
        const queryParams = Object.entries(request.Query)
          .filter(
            ([_, value]) =>
              value !== null && value !== undefined && value !== ""
          )
          .map(
            ([key, value]) =>
              `${encodeURIComponent(key)}=${encodeURIComponent(value)}`
          )
          .sort();
        queryString = queryParams.join("&");
      }
    }

    // 4. Headers
    // First, collect all headers in a normalized format
    const headers: Record<string, string> = { "x-date": xDate };
    if (request.Headers) {
      if (Array.isArray(request.Headers)) {
        request.Headers.forEach((headerObj) => {
          Object.entries(headerObj).forEach(([key, value]) => {
            if (value !== null && value !== undefined && value.trim() !== "") {
              headers[key.toLowerCase()] = value.trim();
            }
          });
        });
      } else {
        Object.entries(request.Headers).forEach(([key, value]) => {
          if (value !== null && value !== undefined && value.trim() !== "") {
            headers[key.toLowerCase()] = value.trim();
          }
        });
      }
    }

    // Get required headers if they exist
    const signedHeaderKeys: string[] = [];
    const requiredHeaders = ["host", "x-date"];

    // Add required headers first if they exist
    requiredHeaders.forEach((key) => {
      if (headers[key]) {
        signedHeaderKeys.push(key);
      }
    });

    // Add any additional headers
    // const additionalHeaders = Object.keys(headers)
    //   .filter((key) => !requiredHeaders.includes(key))
    //   .sort();
    // signedHeaderKeys.push(...additionalHeaders);

    // Build canonical headers string
    const canonicalHeaders = signedHeaderKeys
      .map((key) => `${key}:${headers[key]}`)
      .join("\n");

    // Build signed headers string
    const signedHeaders = signedHeaderKeys.join(";");

    // 5. Payload/Body
    let hashedPayload = Process("crypto.Hash", "SHA256", "");
    if (request.Payload !== null && request.Payload !== undefined) {
      if (typeof request.Payload === "string") {
        if (request.Payload !== "") {
          hashedPayload = Process("crypto.Hash", "SHA256", request.Payload);
        }
      } else {
        const payload = JSON.stringify(request.Payload);
        if (payload !== "{}" && payload !== "[]") {
          hashedPayload = Process("crypto.Hash", "SHA256", payload);
        }
      }
    }

    // Combine all components
    const parts = [
      method,
      uri,
      queryString,
      canonicalHeaders,
      "", // Empty line after headers
      signedHeaders,
      hashedPayload,
    ];

    return parts.join("\n");
  }

  /**
   * Format date to YYYYMMDDTHHMMSSZ
   * @param date Date object
   * @returns Formatted date string
   */
  private formatDate(date: Date): string {
    const year = date.getUTCFullYear();
    const month = String(date.getUTCMonth() + 1).padStart(2, "0");
    const day = String(date.getUTCDate()).padStart(2, "0");
    const hours = String(date.getUTCHours()).padStart(2, "0");
    const minutes = String(date.getUTCMinutes()).padStart(2, "0");
    const seconds = String(date.getUTCSeconds()).padStart(2, "0");
    return `${year}${month}${day}T${hours}${minutes}${seconds}Z`;
  }

  /**
   * Create string to sign
   * @param canonicalRequest Canonical request string
   * @returns String to sign
   */
  private stringToSign(canonicalRequest: string): string {
    const algorithm = "HMAC-SHA256";
    const requestDateTime = this.formatDate(new Date());
    const requestDate = requestDateTime.slice(0, 8);
    const credentialScope = `${requestDate}/${this.Region}/${this.Service}/request`; // YYYYMMDD

    const hashedCanonicalRequest = Process(
      "crypto.Hash",
      "SHA256",
      canonicalRequest
    );

    return `${algorithm}\n${requestDateTime}\n${credentialScope}\n${hashedCanonicalRequest}`;
  }

  /**
   * Derive signing key
   * @param date Date in YYYY/MM/DD format
   * @returns Signing key
   */
  private getSigningKey(date: string): string {
    const kDate = Process("crypto.HMAC", "SHA256", date, this.SecretAccessKey);
    const kRegion = Process(
      "crypto.HMACWith",
      { key: "hex" },
      this.Region,
      kDate
    );
    const kService = Process(
      "crypto.HMACWith",
      { key: "hex" },
      this.Service,
      kRegion
    );

    const kSigning = Process(
      "crypto.HMACWith",
      { key: "hex" },
      "request",
      kService
    );
    return kSigning;
  }

  /**
   * Calculate signature
   * @param stringToSign String to sign
   * @param signingKey Signing key
   * @returns Signature
   */
  private signature(stringToSign: string, signingKey: string): string {
    return Process("crypto.HMACWith", { key: "hex" }, stringToSign, signingKey);
  }

  /**
   * Build authorization header
   * @param request Request object
   * @returns Authorization header value
   */
  public getAuthorization(request: Request): string {
    const xDate = this.formatDate(new Date());
    if (request.Headers) {
      if (typeof request.Headers === "object") {
        request.Headers["x-date"] = request.Headers["x-date"]
          ? request.Headers["x-date"]
          : xDate;
      }
    }

    // 1. Create canonical request
    const canonicalReq = this.canonicalRequest(request);

    // 2. Create string to sign
    const stringToSign = this.stringToSign(canonicalReq);

    // 3. Get date from string to sign
    const [algorithm, requestDateTime, credentialScope] =
      stringToSign.split("\n");
    const date = requestDateTime.slice(0, 8);

    // 4. Derive signing key
    const signingKey = this.getSigningKey(date);
    // 5. Calculate signature
    const signature = this.signature(stringToSign, signingKey);

    // 6. Build authorization header
    let signedHeaders = "";
    if (request.Headers) {
      const headers: Record<string, string> = {};
      if (Array.isArray(request.Headers)) {
        request.Headers.forEach((headerObj) => {
          Object.entries(headerObj).forEach(([key, value]) => {
            headers[key.toLowerCase()] = value.trim();
          });
        });
      } else {
        Object.entries(request.Headers).forEach(([key, value]) => {
          headers[key.toLowerCase()] = value.trim();
        });
      }
      signedHeaders = Object.keys(headers).sort().join(";");
    }

    return `${algorithm} Credential=${this.AccessKeyId}/${credentialScope}, SignedHeaders=${signedHeaders}, Signature=${signature}`;
  }
}

export interface Option {
  AccessKeyId: string;
  SecretAccessKey: string;
  Endpoint?: string;
  Region: string;
  Service: string;
}

export interface Request {
  Method: "GET" | "POST";
  URI: string | null; // Default /
  Query: Record<string, string> | Record<string, string>[] | null;
  Headers: Record<string, string> | Record<string, string>[] | null;
  Payload: string | Record<string, any> | any[] | null;
}