Qualification
  school              SchoolId --TODO: Ansprechpartner der Schule in Briefe erwähnen
  shorthand           (CI Text)
  name                (CI Text)
  description         StoredMarkup Maybe        -- user-defined large Html, ought to contain full description
  validDuration       Word Maybe                -- qualification is valid for this number of months
  auditDuration       Word Maybe                -- number of month to keep audit log
  refreshWithin       CalendarDiffDays Maybe    -- refresher is scheduled within this number of month before expiry
  elearningOnly       Bool                      -- successful E-learing automatically increases validity
  -- refreshInvitation   StoredMarkup           -- hard-coded I18N-MSGs used instead, but displayed on qualification page
  -- expiryNotification  StoredMarkup Maybe     -- configurable user-profile-notifcations are used instead
  UniqueSchoolShort school shorthand            -- must be unique per school and shorthand
  UniqueSchoolName  school name                 -- must be unique per school and name
  deriving Generic

QualificationEdit
  user            User
  time            UTCTime
  qualification   QualificationId OnDeleteCascade OnUpdateCascade
  deriving Generic

-- TODO: connect Qualification with Exams!

QualificationUser
  user              User
  qualification     QualificationId
  validUntil        UTCTime
  lastRefresh       UTCTime                     -- lastRefresh > validUntil possible, if Qualification^elearningOnly == False
  firstHeld         UTCTime                     -- first time the qualification was earned, should never change
  UniqueQualificationUser qualification user
  deriving Generic



-- LMS Interface Tables, need regular processing by background jobs
LmsUser
  qualification     QualificationId
  user              UserId
  ident             LmsIdent
  pin               Text
  resetPin          Bool                    -- should the pin be reset?
  delete            Bool                    -- should the ident be deleted? TODO: do we need this?
  started           UTCTime Maybe
  submitted         UTCTime Maybe           -- ident was sent to LMS (should happen only once)  
  ended             UTCTime Maybe           -- ident was deleted in LMS 
  UniqueLmsUser qualification ident
  deriving Generic

-- LmsUserlist stores LMS upload ofr later processing only 
LmsUserlist
  qualification     QualificationId        
  ident             LmsIdent
  failed            Bool
  timestamp         UTCTime default=now()
  deriving Generic

-- LmsUserlist stores LMS upload ofr later processing only 
LmsResult
  qualification     QualificationId
  ident             LmsIdent
  success           Day
  timestamp         UTCTime default=now()
  deriving Generic

-- Logs all processed rows from LmsUserlist and LmsResult
LmsAudit 
  qualification     QualificationId
  ident             LmsIdent
  notificationType  LmsNotification
  received          UTCTime
  processed         UTCTime default=now()
  deriving Generic