const formulaTypes = {
  NUMERIC: "numeric",
  STRING: "string",
  DATE: "date",
  LOGICAL: "logical",
  COND_EXP: "conditional_expression"
}

const formulas = {
  AVG: {
    type: formulaTypes.NUMERIC,
    validation: {
      args: {
        min: 1
      }
    },
    description: 'Average of input parameters',
    syntax: 'AVG(value1, [value2, ...])',
    examples: [
      'AVG(10, 5) => 7.5',
      'AVG({column1}, {column2})',
      'AVG({column1}, {column2}, {column3})'
    ]
  },
  ADD: {
    type: formulaTypes.NUMERIC,
    validation: {
      args: {
        min: 1
      }
    },
    description: 'Sum of input parameters',
    syntax: 'ADD(value1, [value2, ...])',
    examples: [
      'ADD(5, 5) => 10',
      'ADD({column1}, {column2})',
      'ADD({column1}, {column2}, {column3})'
    ]
  },
  DATEADD: {
    type: formulaTypes.DATE,
    validation: {
      args: {
        rqd: 3
      }
    },
    description: 'Adds a "count" units to Datetime.',
    syntax: 'DATEADD(date | datetime, value, ["day" | "week" | "month" | "year"])',
    examples: [
      'DATEADD({column1}, 2, "day")',
      'DATEADD({column1}, -2, "day")',
      'DATEADD({column1}, 2, "week")',
      'DATEADD({column1}, -2, "week")',
      'DATEADD({column1}, 2, "month")',
      'DATEADD({column1}, -2, "month")',
      'DATEADD({column1}, 2, "year")',
      'DATEADD({column1}, -2, "year")'
    ]
  },
  AND: {
    type: formulaTypes.COND_EXP,
    validation: {
      args: {
        min: 1
      }
    },
    description: 'TRUE if all expr evaluate to TRUE',
    syntax: 'AND(expr1, [expr2, ...])',
    examples: [
      'AND(5 > 2, 5 < 10) => 1',
      'AND({column1} > 2, {column2} < 10)'
    ]
  },
  OR: {
    type: formulaTypes.COND_EXP,
    validation: {
      args: {
        min: 1
      }
    },
    description: 'TRUE if at least one expr evaluates to TRUE',
    syntax: 'OR(expr1, [expr2, ...])',
    examples: [
      'OR(5 > 2, 5 < 10) => 1',
      'OR({column1} > 2, {column2} < 10)'
    ]
  },
  CONCAT: {
    type: formulaTypes.STRING,
    validation: {
      args: {
        min: 1
      }
    },
    description: 'Concatenated string of input parameters',
    syntax: 'CONCAT(str1, [str2, ...])',
    examples: [
      'CONCAT("AA", "BB", "CC") => "AABBCC"',
      'CONCAT({column1}, {column2}, {column3})'
    ]
  },
  TRIM: {
    type: formulaTypes.STRING,
    validation: {
      args: {
        rqd: 1
      }
    },
    description: 'Remove trailing and leading whitespaces from input parameter',
    syntax: 'TRIM(str)',
    examples: [
      'TRIM("         HELLO WORLD  ") => "HELLO WORLD"',
      'TRIM({column1})'
    ]
  },
  UPPER: {
    type: formulaTypes.STRING,
    validation: {
      args: {
        rqd: 1
      }
    },
    description: 'Upper case converted string of input parameter',
    syntax: 'UPPER(str)',
    examples: [
      'UPPER("nocodb") => "NOCODB"',
      'UPPER({column1})'
    ]
  },
  LOWER: {
    type: formulaTypes.STRING,
    validation: {
      args: {
        rqd: 1
      }
    },
    description: 'Lower case converted string of input parameter',
    syntax: 'LOWER(str)',
    examples: [
      'LOWER("NOCODB") => "nocodb"',
      'LOWER({column1})'
    ]
  },
  LEN: {
    type: formulaTypes.STRING,
    validation: {
      args: {
        rqd: 1
      }
    },
    description: 'Input parameter character length',
    syntax: 'LEN(value)',
    examples: [
      'LEN("NocoDB") => 6',
      'LEN({column1})'
    ]
  },
  MIN: {
    type: formulaTypes.NUMERIC,
    validation: {
      args: {
        min: 1
      }
    },
    description: 'Minimum value amongst input parameters',
    syntax: 'MIN(value1, [value2, ...])',
    examples: [
      'MIN(1000, 2000) => 1000',
      'MIN({column1}, {column2})'
    ]
  },
  MAX: {
    type: formulaTypes.NUMERIC,
    validation: {
      args: {
        min: 1
      }
    },
    description: 'Maximum value amongst input parameters',
    syntax: 'MAX(value1, [value2, ...])',
    examples: [
      'MAX(1000, 2000) => 2000',
      'MAX({column1}, {column2})'
    ]
  },
  CEILING: {
    type: formulaTypes.NUMERIC,
    validation: {
      args: {
        rqd: 1
      }
    },
    description: 'Rounded next largest integer value of input parameter',
    syntax: 'CEILING(value)',
    examples: [
      'CEILING(1.01) => 2',
      'CEILING({column1})'
    ]
  },
  FLOOR: {
    type: formulaTypes.NUMERIC,
    validation: {
      args: {
        rqd: 1
      }
    },
    description: 'Rounded largest integer less than or equal to input parameter',
    syntax: 'FLOOR(value)',
    examples: [
      'FLOOR(3.1415) => 3',
      'FLOOR({column1})'
    ]
  },
  ROUND: {
    type: formulaTypes.NUMERIC,
    validation: {
      args: {
        rqd: 1
      }
    },
    description: 'Nearest integer to the input parameter',
    syntax: 'ROUND(value)',
    examples: [
      'ROUND(3.1415) => 3',
      'ROUND({column1})'
    ]
  },
  MOD: {
    type: formulaTypes.NUMERIC,
    validation: {
      args: {
        rqd: 2
      }
    },
    description: 'Remainder after integer division of input parameters',
    syntax: 'MOD(value1, value2)',
    examples: [
      'MOD(1024, 1000) => 24',
      'MOD({column}, 2)'
    ]
  },
  REPEAT: {
    type: formulaTypes.STRING,
    validation: {
      args: {
        rqd: 2
      }
    },
    description: 'Specified copies of the input parameter string concatenated together',
    syntax: 'REPEAT(str, count)',
    examples: [
      'REPEAT("A", 5) => "AAAAA"',
      'REPEAT({column}, 5)'
    ]
  },
  LOG: {
    type: formulaTypes.NUMERIC,
    validation: {},
    description: 'Logarithm of input parameter to the base (default = e) specified',
    syntax: 'LOG([base], value)',
    examples: [
      'LOG(2, 1024) => 10',
      'LOG(2, {column1})'
    ]
  },
  EXP: {
    type: formulaTypes.NUMERIC,
    validation: {},
    description: 'Exponential value of input parameter (e ^ power)',
    syntax: 'EXP(power)',
    examples: [
      'EXP(1) => 2.718281828459045',
      'EXP({column1})'
    ]
  },
  POWER: {
    type: formulaTypes.NUMERIC,
    validation: {
      args: {
        rqd: 2
      }
    },
    description: 'base to the exponent power, as in base ^ exponent',
    syntax: 'POWER(base, exponent)',
    examples: [
      'POWER(2, 10) => 1024',
      'POWER({column1}, 10)'
    ]
  },
  SQRT: {
    type: formulaTypes.NUMERIC,
    validation: {
      args: {
        rqd: 1
      }
    },
    description: 'Square root of the input parameter',
    syntax: 'SQRT(value)',
    examples: [
      'SQRT(100) => 10',
      'SQRT({column1})'
    ]
  },
  ABS: {
    type: formulaTypes.NUMERIC,
    validation: {
      args: {
        rqd: 1
      }
    },
    description: 'Absolute value of the input parameter',
    syntax: 'ABS(value)',
    examples: [
      'ABS({column1})'
    ]
  },
  NOW: {
    type: formulaTypes.DATE,
    validation: {
      args: {
        rqd: 0
      }
    },
    description: 'Returns the current time and day',
    syntax: 'NOW()',
    examples: [
      'NOW() => 2022-05-19 17:20:43'
    ]
  },
  REPLACE: {
    type: formulaTypes.STRING,
    validation: {
      args: {
        rqd: 3
      }
    },
    description: 'String, after replacing all occurrences of srchStr with rplcStr',
    syntax: 'REPLACE(str, srchStr, rplcStr)',
    examples: [
      'REPLACE("AABBCC", "AA", "BB") => "BBBBCC"',
      'REPLACE({column1}, {column2}, {column3})'
    ]
  },
  SEARCH: {
    type: formulaTypes.STRING,
    validation: {
      args: {
        rqd: 2
      }
    },
    description: 'Index of srchStr specified if found, 0 otherwise',
    syntax: 'SEARCH(str, srchStr)',
    examples: [
      'SEARCH("HELLO WORLD", "WORLD") => 7',
      'SEARCH({column1}, "abc")'
    ]
  },
  INT: {
    type: formulaTypes.NUMERIC,
    validation: {
      args: {
        rqd: 1
      }
    },
    description: 'Integer value of input parameter',
    syntax: 'INT(value)',
    examples: [
      'INT(3.1415) => 3',
      'INT({column1})'
    ]
  },
  RIGHT: {
    type: formulaTypes.STRING,
    validation: {
      args: {
        rqd: 2
      }
    },
    description: 'n characters from the end of input parameter',
    syntax: 'RIGHT(str, n)',
    examples: [
      'RIGHT("HELLO WORLD", 5) => WORLD',
      'RIGHT({column1}, 3)'
    ]
  },
  LEFT: {
    type: formulaTypes.STRING,
    validation: {
      args: {
        rqd: 2
      }
    },
    description: 'n characters from the beginning of input parameter',
    syntax: 'LEFT(str, n)',
    examples: [
      'LEFT({column1}, 2)',
      'LEFT("ABCD", 2) => "AB"'
    ]
  },
  SUBSTR: {
    type: formulaTypes.STRING,
    validation: {
      args: {
        min: 2,
        max: 3
      }
    },
    description: 'Substring of length n of input string from the postition specified',
    syntax: '	SUBTR(str, position, [n])',
    examples: [
      'SUBSTR("HELLO WORLD", 7) => WORLD',
      'SUBSTR("HELLO WORLD", 7, 3) => WOR',
      'SUBSTR({column1}, 7, 5)'
    ]
  },
  MID: {
    type: formulaTypes.STRING,
    validation: {
      args: {
        rqd: 3
      }
    },
    description: 'Alias for SUBSTR',
    syntax: 'MID(str, position, [count])',
    examples: [
      'MID("NocoDB", 3, 2) => "co"',
      'MID({column1}, 3, 2)'
    ]
  },
  IF: {
    type: formulaTypes.COND_EXP,
    validation: {
      args: {
        min: 2,
        max: 3
      }
    },
    description: 'SuccessCase if expr evaluates to TRUE, elseCase otherwise',
    syntax: 'IF(expr, successCase, elseCase)',
    examples: [
      'IF(5 > 1, "YES", "NO") => "YES"',
      'IF({column} > 1, "YES", "NO")'
    ]
  },
  SWITCH: {
    type: formulaTypes.COND_EXP,
    validation: {
      args: {
        min: 3
      }
    },
    description: 'Switch case value based on expr output',
    syntax: 'SWITCH(expr, [pattern, value, ..., default])',
    examples: [
      'SWITCH(1, 1, "One", 2, "Two", "N/A") => "One""',
      'SWITCH(2, 1, "One", 2, "Two", "N/A") => "Two"',
      'SWITCH(3, 1, "One", 2, "Two", "N/A") => "N/A"',
      'SWITCH({column1}, 1, "One", 2, "Two", "N/A")'
    ]
  },
  URL: {
    type: formulaTypes.STRING,
    validation: {
      args: {
        rqd: 1
      }
    },
    description: 'Convert to a hyperlink if it is a valid URL',
    syntax: 'URL(str)',
    examples: [
      'URL("https://github.com/nocodb/nocodb")',
      'URL({column1})'
    ]
  },
  WEEKDAY: {
    type: formulaTypes.NUMERIC,
    validation: {
      args: {
        min: 1,
        max: 2,
      }
    },
    description: 'Convert to a hyperlink if it is a valid URL',
    syntax: 'WEEKDAY(date, [startDayOfWeek])',
    examples: [
      'WEEKDAY("2021-06-09")',
      'WEEKDAY(CURDATE(), "Monday")'
    ]
  }
}

export default Object.keys(formulas)
export { formulas, formulaTypes }