module Registry.Types where

-- TODO: import Time and use CalendarTime
type DateTime = String

data Language = Language {lang'subtag::String, lang'descr::[String],
                         lang'added::DateTime, lang'script::Maybe String,
                         lang'preferredValue::Maybe String,
                         lang'macroLanguage::Maybe String, 
                         lang'deprecated::Maybe DateTime,
                         lang'scope::Maybe String,
                         lang'comment::Maybe String
                         } 
                     deriving Show

data Extlang = Extlang {extlang'subtag::String, extlang'descr::[String],
                         extlang'added::DateTime, extlang'script::Maybe String,
                         extlang'prefix::String, -- An extlang can have only one prefix
                         extlang'preferredValue::Maybe String,
                         extlang'macroLanguage::Maybe String,
                         extlang'scope::Maybe String} 
                     deriving Show

data Script = Script {script'subtag::String, script'descr::[String],
                       script'added::DateTime, script'comment::Maybe String} deriving Show

data Region = Region {region'subtag::String, region'descr::[String],
                      region'added::DateTime, region'comment::Maybe String} deriving Show
                      -- TODO: Deprecated and preferredValue

data Variant = Variant {variant'subtag::String, variant'descr::[String],
                      variant'added::DateTime, variant'prefix::[String],
                      variant'comment::Maybe String} deriving Show

data Redundant = Redundant {redundant'tag::String, redundant'descr::[String],
                      redundant'added::DateTime} deriving Show

data Grandfathered = Grandfathered {gf'tag::String, gf'descr::[String],
                                    gf'added::DateTime} deriving Show

-- TODO: implements them
data Extension = Extension {ext'added::DateTime} deriving Show

data Record = Reg Region | Lang Language | Extl Extlang | Scr Script | Var Variant | 
             Red Redundant | GF Grandfathered | Ext Extension | Date DateTime deriving Show

type Registry = [Record]

data CheckResult = Success Registry | SyntaxError String | SemanticError String
    deriving Show

combineC (Success r1) (Success r2) = Success r1
combineC (Success r) (SyntaxError e) = SyntaxError e
combineC (SyntaxError e) (Success r) = SyntaxError e
combineC (Success r) (SemanticError e) = SemanticError e
combineC (SemanticError e) (Success r) = SemanticError e
combineC (SyntaxError e1) (SemanticError e2) = SyntaxError e1
combineC (SemanticError e2) (SyntaxError e1) = SyntaxError e1
combineC (SyntaxError e1) (SyntaxError e2) = SyntaxError (e1 ++ " ; " ++ e2)
combineC (SemanticError e1) (SemanticError e2) = SemanticError (e1 ++ " ; " ++ e2)