dbCodegen

type CodegenConfig struct {
	PgDbUrl                  string // DB URL string for PostgreSQL database to which we have to connect
	ModelsContainerPackage   string // Full package name under which the DB and Network packages will fall
	DbModelPackageName       string // Name of the package under which the db related code will be placed
	DbModelPackagePath       string // Full path of the directory where the generated code for db will be placed
	NetworkPackageName       string // Name of the package under which the networking related code for DB tables is gonna be placed
	NetworkPackagePath       string // Full path of the directory where the networking related code for DB tables is gonna be placed
	MagicComment             string // Magic comment which allows the generator to update only the generated portion of code
	ColCommentSeparator      string // The string after which we can place the Properties JSON in column comment
	InsertCreatedAtInCode    bool   // Should the code for inserting `created_at` timestamp column be generated by the code generator?
	InsertUpdatedAtInCode    bool   // Should the code for inserting `updated_at` timestamp column be generated by the code generator?
	UpdateUpdatedAtInCode    bool   // Should the code for updating `updated_at` timestamp column be generated by the code generator?
	BuildUpdateByUniqueIndex bool   // Should we generate the update functions for unique indexes?
	ColumnOrderAlphabetic    bool   // Column order in generated code will be alphabetic if this is set to true, ordinal otherwise
	Enumerations             map[string]EnumDefinition
}

type DbColumn struct {
	Schema            string           // Schema name in which this column's table resides
	Table             string           // Table name of the table in which this column is
	Name              string           // Column name
	GoName            string           // Name we want to use for Golang code that will be generated
	GoNameSingular    string           // Singular form of the name
	GoNamePlural      string           // Plural form of the name
	DataType          string           // Data type we get from db
	GoDataType        string           // Data type we want to use in go program
	NetworkDataType   string           // Data type we want to use for the network model
	Comment           string           // Column comment
	CharacterLength   int              // Length in case it is varchar
	Nullable          bool             // NOT NULL means it is false
	HasDefaultValue   bool             // Does the column have a default value?
	DefaultValue      string           // If column has default value then what is it
	CommentProperties dbColumnProperty // Properties that will control mostly column value validations
}

type DbFkInfo struct {
	FromSchema     string            // The schema name of the table from which the foreign key reference is being made
	FromTable      string            // The table name which is referencing the target table
	ToSchema       string            // The schema name of the table whose column is being referenced
	ToTable        string            // The table name of the table which is being referenced
	FromColOrder   []string          // The order which the columns appear in the FromTable
	References     map[string]string // The reference map ([from_column]to_column format)
	ConstraintName string            // Name of the foreign key constraint
}

type DbIndex struct {
	Name       string     // Name of the index
	IsUnique   bool       // Is this a "unique" index?
	IsPrimary  bool       // Does this index correspond to the primary key of the table
	ColumnList []DbColumn // List of columns of this index (ordered the same way as the columns are defined in the index)
}

type DbRevFkInfo struct {
	DbFkInfo
	UniqueIndex bool // Is there a unique index on the column set pointing to this column
}

type DbSchema struct {
	Name      string             // Name of the schema
	GoName    string             // The name of table as a go variable that we would use
	Tables    map[string]DbTable // Map of name of table to their DbTable struct values
	TablesA2z []string           // List of Tables in alphabetical order
}

type DbTable struct {
	Name           string                 // Table name as got from the query
	GoName         string                 // The name of table as a go variable that we would use
	GoNameSingular string                 // Singular form of GoName
	GoNamePlural   string                 // Plural form of GoName
	Schema         string                 // The name of the schema where this table resides
	Comment        string                 // Comment on the table
	ColumnMap      map[string]DbColumn    // List of columns as a map from the name of the column to the DbColumn type
	ColumnList     []string               // List of columns (ordinal)
	ColumnListA2z  []string               // List of column names (alphabetical)
	PkColumnList   []DbColumn             // List of columns that make the primary key (slice because order matters)
	IndexList      []DbIndex              // List of indexes on this table
	FKeyMap        map[string]DbFkInfo    // List of foreign keys in table as map from constraint name to DbFkInfo type
	RevFKeyMap     map[string]DbRevFkInfo // List of reverse reference in table as map from constraint name to DbRevFkInfo type
}

type EnumDefinition struct {
	Name              string           // Name of this enum
	Exported          bool             // Enum to be used outside the DB package
	IsDbType          bool             // Is this enum supposed to be used in the DB?
	Mappings          map[string]int16 // List of enumerations
	DisableGeneration bool             // Disable the generation/update of this type (temporarily?)
	// contains filtered or unexported fields
}

type Generator struct {
	// More fields to be decided
	Config  CodegenConfig             // The configuration for this generator
	Schemas map[string]DbSchema       // The schemas in the database (will in turn contain tables)
	Enums   map[string]EnumDefinition // The enumerations to be built

	sync.Mutex // To prevent parallel runs
	// contains filtered or unexported fields
}