constants

const (
	// ByteSpace is the space character.
	ByteSpace = ' '
	// ByteColon is the colon character.
	ByteColon = ':'
	// ByteSemicolon is the semicolon character.
	ByteSemicolon = ';'
	// ByteSlash is the slash character.
	ByteSlash = '/'
	// ByteAsterisk is the asterisk character.
	ByteAsterisk = '*'
	// ByteDot is the dot character.
	ByteDot = '.'
	// ByteComma is the comma character.
	ByteComma = ','
	// ByteHyphen is the hyphen character.
	ByteHyphen = '-'
	// ByteUnderscore is the underscore character.
	ByteUnderscore = '_'
	// ByteAt is the at character.
	ByteAt = '@'
	// ByteHash is the hash character.
	ByteHash = '#'
	// ByteDollar is the dollar character.
	ByteDollar = '$'
	// BytePercent is the percent character.
	BytePercent = '%'
	// BytePlus is the plus character.
	BytePlus = '+'
	// ByteMinus is the minus character.
	ByteMinus = '-'
	// ByteEquals is the equals character.
	ByteEquals = '='
	// ByteAmpersand is the ampersand character.
	ByteAmpersand = '&'
	// BytePipe is the pipe character.
	BytePipe = '|'
	// ByteTilde is the tilde character.
	ByteTilde = '~'
	// ByteBacktick is the backtick character.
	ByteBacktick = '`'
	// ByteQuestionMark is the question mark character.
	ByteQuestionMark = '?'
	// ByteExclamationMark is the exclamation mark character.
	ByteExclamationMark = '!'
	// ByteLeftParenthesis is the left parenthesis character.
	ByteLeftParenthesis = '('
	// ByteRightParenthesis is the right parenthesis character.
	ByteRightParenthesis = ')'
	// ByteLeftBracket is the left bracket character.
	ByteLeftBracket = '['
	// ByteRightBracket is the right bracket character.
	ByteRightBracket = ']'
	// ByteLeftBrace is the left brace character.
	ByteLeftBrace = '{'
	// ByteRightBrace is the right brace character.
	ByteRightBrace = '}'
	// ByteDoubleQuote is the double quote character.
	ByteDoubleQuote = '"'
	// ByteSingleQuote is the single quote character.
	ByteSingleQuote = '\''
	// ByteBackslash is the backslash character.
	ByteBackslash = '\\'
	// ByteCarriageReturn is the carriage return character.
	ByteCarriageReturn = '\r'
	// ByteNewline is the newline character.
	ByteNewline = '\n'
	// ByteTab is the tab character.
	ByteTab = '\t'
)

const (
	DbOracle    = "oracle"
	DbSQLServer = "sqlserver"
	DbPostgres  = "postgres"
	DbMySQL     = "mysql"
	DbSQLite    = "sqlite"
)

const (
	EnvKeyPrefix    = "VEF"
	EnvNodeId       = EnvKeyPrefix + "_NODE_ID"
	EnvLogLevel     = EnvKeyPrefix + "_LOG_LEVEL"
	EnvConfigPath   = EnvKeyPrefix + "_CONFIG_PATH"
	EnvI18NLanguage = EnvKeyPrefix + "_I18N_LANGUAGE"
)

const (
	// HeaderXAppId is the header key for the app id.
	HeaderXAppId = "X-App-Id"
	// HeaderXTimestamp is the header key for the timestamp.
	HeaderXTimestamp = "X-Timestamp"
	// HeaderXSignature is the header key for the signature.
	HeaderXSignature = "X-Signature"
	// HeaderXRequestId is the header key for the request id.
	HeaderXRequestId = "X-Request-Id"
)

const (
	// JsonNull is the string representation of the null value in JSON.
	JsonNull = "null"
	// JsonQuote is the quote character used in JSON strings.
	JsonQuote byte = '"'
)

const (
	PlaceholderKeyOperator = "Operator" // PlaceholderKeyOperator is the placeholder for the operator in the db

	OperatorSystem    = "system"    // OperatorSystem is the operator for the system
	OperatorCronJob   = "cron_job"  // OperatorCronJob is the operator for the cron job
	OperatorAnonymous = "anonymous" // OperatorAnonymous is the operator for the anonymous

	ExprOperator     = "?Operator"     // ExprOperator is the operator placeholder
	ExprTableColumns = "?TableColumns" // ExprTableColumns is the table columns placeholder
	ExprColumns      = "?Columns"      // ExprColumns is the columns' placeholder
	ExprTablePks     = "?TablePKs"     // ExprTablePks is the table primary keys' placeholder
	ExprPks          = "?PKs"          // ExprPks is the primary keys placeholder
	ExprTableName    = "?TableName"    // ExprTableName is the table name placeholder
	ExprTableAlias   = "?TableAlias"   // ExprTableAlias is the table alias placeholder

	ColumnId            = "id"              // ColumnId is the column name for the id
	ColumnCreatedAt     = "created_at"      // ColumnCreatedAt is the column name for the created at
	ColumnUpdatedAt     = "updated_at"      // ColumnUpdatedAt is the column name for the updated at
	ColumnCreatedBy     = "created_by"      // ColumnCreatedBy is the column name for the created by
	ColumnUpdatedBy     = "updated_by"      // ColumnUpdatedBy is the column name for the updated by
	ColumnCreatedByName = "created_by_name" // ColumnCreatedByName is the column name for the created by name
	ColumnUpdatedByName = "updated_by_name" // ColumnUpdatedByName is the column name for the updated by name

	FieldId            = "Id"            // FieldId is the field name for the id
	FieldCreatedAt     = "CreatedAt"     // FieldCreatedAt is the field name for the created at
	FieldUpdatedAt     = "UpdatedAt"     // FieldUpdatedAt is the field name for the updated at
	FieldCreatedBy     = "CreatedBy"     // FieldCreatedBy is the field name for the created by
	FieldUpdatedBy     = "UpdatedBy"     // FieldUpdatedBy is the field name for the updated by
	FieldCreatedByName = "CreatedByName" // FieldCreatedByName is the field name for the created by name
	FieldUpdatedByName = "UpdatedByName" // FieldUpdatedByName is the field name for the updated by name
)

const (
	AuthSchemeBearer = "Bearer"

	QueryKeyAccessToken = "__accessToken"

	// System internal principals that are not allowed to login.
	PrincipalSystem    = OperatorSystem    // PrincipalSystem is the system principal
	PrincipalCronJob   = OperatorCronJob   // PrincipalCronJob is the cron job principal
	PrincipalAnonymous = OperatorAnonymous // PrincipalAnonymous is the anonymous principal
)

const (
	// Empty is the empty string.
	Empty = ""
	// Colon is the colon character.
	Colon = ":"
	// ColonSpace is the colon and space character.
	ColonSpace = ": "
	// Semicolon is the semicolon character.
	Semicolon = ";"
	// Slash is the slash character.
	Slash = "/"
	// DoubleSlash is the double slash character.
	DoubleSlash = "//"
	// Asterisk is the asterisk character.
	Asterisk = "*"
	// Dot is the dot character.
	Dot = "."
	// Comma is the comma character.
	Comma = ","
	// CommaSpace is the comma and space character.
	CommaSpace = ", "
	// Space is the space character.
	Space = " "
	// Hyphen is the hyphen character.
	Hyphen = "-"
	// Underscore is the underscore character.
	Underscore = "_"
	// At is the at character.
	At = "@"
	// Hash is the hash character.
	Hash = "#"
	// Dollar is the dollar character.
	Dollar = "$"
	// Percent is the percent character.
	Percent = "%"
	// Plus is the plus character.
	Plus = "+"
	// Minus is the minus character.
	Minus = "-"
	// Equals is the equals character.
	Equals = "="
	// Ampersand is the ampersand character.
	Ampersand = "&"
	// Pipe is the pipe character.
	Pipe = "|"
	// Tilde is the tilde character.
	Tilde = "~"
	// Backtick is the backtick character.
	Backtick = "`"
	// QuestionMark is the question mark character.
	QuestionMark = "?"
	// ExclamationMark is the exclamation mark character.
	ExclamationMark = "!"
	// LeftParenthesis is the left parenthesis character.
	LeftParenthesis = "("
	// RightParenthesis is the right parenthesis character.
	RightParenthesis = ")"
	// LeftBracket is the left bracket character.
	LeftBracket = "["
	// RightBracket is the right bracket character.
	RightBracket = "]"
	// LeftBrace is the left brace character.
	LeftBrace = "{"
	// RightBrace is the right brace character.
	RightBrace = "}"
	// DoubleQuote is the double quote character.
	DoubleQuote = "\""
	// SingleQuote is the single quote character.
	SingleQuote = "'"
	// Backslash is the backslash character.
	Backslash = "\\"
	// CarriageReturn is the carriage return character.
	CarriageReturn = "\r"
	// Newline is the newline character.
	Newline = "\n"
	// CarriageReturnNewline is the carriage return and newline character.
	CarriageReturnNewline = "\r\n"
	// Tab is the tab character.
	Tab = "\t"
)

const (
	TypeInt      = "int"
	TypeString   = "str"
	TypeBool     = "bool"
	TypeDecimal  = "dec"
	TypeDate     = "date"
	TypeDateTime = "datetime"
	TypeTime     = "time"
)

const (
	DefaultI18NLanguage = "zh-CN" // DefaultI18NLanguage is the default language for the i18n system
)

const (
	// VEFVersion represents the current version of the VEF Framework.
	// This version number follows semantic versioning (semver) format.
	VEFVersion = "v0.15.2"
)