Project biergarten_app {
  database_type: 'SQL Server'
  Note: 'Generated from Database.Migrations/scripts/01-schema. Default schema is dbo.'
}

Table UserAccount {
  UserAccountID uniqueidentifier [pk, default: `newid()`]
  Username varchar(64) [not null, unique]
  FirstName nvarchar(128) [not null]
  LastName nvarchar(128) [not null]
  Email varchar(128) [not null, unique]
  CreatedAt datetime [not null, default: `getdate()`]
  UpdatedAt datetime
  DateOfBirth date [not null]
  RowVersion rowversion
}

Table Photo {
  PhotoID uniqueidentifier [pk, default: `newid()`]
  Hyperlink nvarchar(256) [note: 'storage handled via filesystem/cloud service']
  UploadedByID uniqueidentifier [not null]
  UploadedAt datetime [not null, default: `getdate()`]
  RowVersion rowversion

  Note: 'A user account cannot be deleted while it has uploaded photos'

  Indexes {
    UploadedByID
  }
}

Table UserAvatar {
  UserAvatarID uniqueidentifier [pk, default: `newid()`]
  UserProfileID uniqueidentifier [not null]
  PhotoID uniqueidentifier [not null]
  ValidFrom "datetime2(3)" [not null, default: `sysutcdatetime()`]
  ValidTo "datetime2(3)" [note: 'NULL = currently active']
  RowVersion rowversion

  Note: 'Deleted when the user profile is deleted. At most one row per profile has ValidTo = NULL.'

  Indexes {
    UserProfileID [unique, name: 'UX_UserAvatar_ActiveOne', note: 'filtered: WHERE ValidTo IS NULL']
    PhotoID [name: 'IX_UserAvatar_Photo']
  }
}

Table UserProfile {
  UserProfileID uniqueidentifier [pk, default: `newid()`]
  Biography "nvarchar(max)" [not null]
  UserAccountID uniqueidentifier [not null, unique]
  RowVersion rowversion

  Note: 'Deleted when the user account is deleted'
}

Table UserVerification {
  UserVerificationID uniqueidentifier [pk, default: `newid()`]
  UserAccountID uniqueidentifier [not null, unique]
  VerificationDateTime datetime [not null, default: `getdate()`]
  RowVersion rowversion

  Note: 'Deleted when the user account is deleted'
}

Table UserCredential {
  UserCredentialID uniqueidentifier [pk, default: `newid()`]
  UserAccountID uniqueidentifier [not null]
  CreatedAt datetime [not null, default: `getdate()`]
  Expiry datetime [not null, default: `dateadd(day, 90, getdate())`]
  Hash nvarchar(256) [not null, note: 'argon2 hash']
  IsRevoked bit [not null, default: 0]
  RevokedAt datetime
  RowVersion rowversion

  Note: 'Deleted when the user account is deleted'

  Indexes {
    UserAccountID
    (UserAccountID, IsRevoked, Expiry) [name: 'IX_UserCredential_Account_Active', note: 'includes Hash']
  }
}

Table UserFollow {
  UserFollowID uniqueidentifier [pk, default: `newid()`]
  UserAccountID uniqueidentifier [not null]
  FollowingID uniqueidentifier [not null]
  CreatedAt datetime [not null, default: `getdate()`]
  RowVersion rowversion

  Note: 'CHECK: UserAccountID != FollowingID (cannot follow own account)'

  Indexes {
    (UserAccountID, FollowingID)
    (FollowingID, UserAccountID)
  }
}

Table Country {
  CountryID uniqueidentifier [pk, default: `newid()`]
  CountryName nvarchar(100) [not null]
  ISO3166_1 char(2) [not null, unique]
  RowVersion rowversion
}

Table StateProvince {
  StateProvinceID uniqueidentifier [pk, default: `newid()`]
  StateProvinceName nvarchar(100) [not null]
  ISO3166_2 char(6) [not null, unique, note: "e.g. 'US-CA' for California, 'CA-ON' for Ontario"]
  CountryID uniqueidentifier [not null]
  RowVersion rowversion

  Indexes {
    CountryID
  }
}

Table City {
  CityID uniqueidentifier [pk, default: `newid()`]
  CityName nvarchar(100) [not null]
  StateProvinceID uniqueidentifier [not null]
  RowVersion rowversion

  Indexes {
    StateProvinceID
  }
}

Table BreweryPost {
  BreweryPostID uniqueidentifier [pk, default: `newid()`]
  BreweryName nvarchar(256) [not null]
  PostedByID uniqueidentifier [not null]
  Description "nvarchar(max)" [not null]
  CreatedAt datetime [not null, default: `getdate()`]
  UpdatedAt datetime
  RowVersion rowversion

  Note: 'A user cannot be deleted if they have a post'

  Indexes {
    PostedByID
  }
}

Table BreweryPostLocation {
  BreweryPostLocationID uniqueidentifier [pk, default: `newid()`]
  BreweryPostID uniqueidentifier [not null, unique]
  AddressLine1 nvarchar(256) [not null]
  AddressLine2 nvarchar(256)
  PostalCode nvarchar(20) [not null]
  CityID uniqueidentifier [not null]
  Coordinates geography [note: 'spatial index deferred, see schema.sql history']
  RowVersion rowversion

  Indexes {
    BreweryPostID
    CityID
  }
}

Table BreweryPostPhoto {
  BreweryPostPhotoID uniqueidentifier [pk, default: `newid()`]
  BreweryPostID uniqueidentifier [not null]
  PhotoID uniqueidentifier [not null]
  LinkedAt datetime [not null, default: `getdate()`]
  RowVersion rowversion

  Note: 'All photos linked to a post are deleted if the post is deleted'

  Indexes {
    (PhotoID, BreweryPostID)
    (BreweryPostID, PhotoID)
  }
}

Table BeerStyle {
  BeerStyleID uniqueidentifier [pk, default: `newid()`]
  StyleName nvarchar(100) [not null, unique]
  Description "nvarchar(max)"
  RowVersion rowversion
}

Table BeerPost {
  BeerPostID uniqueidentifier [pk, default: `newid()`]
  Name nvarchar(100) [not null]
  Description "nvarchar(max)" [not null]
  ABV "decimal(4,2)" [not null, note: 'CHECK ABV BETWEEN 0 AND 67']
  IBU int [not null, note: 'CHECK IBU BETWEEN 0 AND 120']
  PostedByID uniqueidentifier [not null]
  BeerStyleID uniqueidentifier [not null]
  BrewedByID uniqueidentifier [not null]
  CreatedAt datetime [not null, default: `getdate()`]
  UpdatedAt datetime
  RowVersion rowversion

  Indexes {
    PostedByID
    BeerStyleID
    BrewedByID
  }
}

Table BeerPostPhoto {
  BeerPostPhotoID uniqueidentifier [pk, default: `newid()`]
  BeerPostID uniqueidentifier [not null]
  PhotoID uniqueidentifier [not null]
  LinkedAt datetime [not null, default: `getdate()`]
  RowVersion rowversion

  Note: 'All photos linked to a beer post are deleted if the post is deleted'

  Indexes {
    (PhotoID, BeerPostID)
    (BeerPostID, PhotoID)
  }
}

Table BeerPostComment {
  BeerPostCommentID uniqueidentifier [pk, default: `newid()`]
  Comment nvarchar(250) [not null]
  BeerPostID uniqueidentifier [not null]
  CommentedByID uniqueidentifier [not null]
  Rating int [not null, note: 'CHECK Rating BETWEEN 1 AND 5']
  CreatedAt datetime [not null, default: `getdate()`]
  UpdatedAt datetime
  RowVersion rowversion

  Indexes {
    BeerPostID
    CommentedByID
  }
}

Ref: Photo.UploadedByID > UserAccount.UserAccountID [delete: no action]
Ref: UserAvatar.PhotoID > Photo.PhotoID [delete: no action]
Ref: UserAvatar.UserProfileID > UserProfile.UserProfileID [delete: cascade]
Ref: UserProfile.UserAccountID - UserAccount.UserAccountID [delete: cascade]
Ref: UserVerification.UserAccountID - UserAccount.UserAccountID [delete: cascade]
Ref: UserCredential.UserAccountID > UserAccount.UserAccountID [delete: cascade]
Ref: UserFollow.UserAccountID > UserAccount.UserAccountID [delete: no action]
Ref: UserFollow.FollowingID > UserAccount.UserAccountID [delete: no action]
Ref: StateProvince.CountryID > Country.CountryID
Ref: City.StateProvinceID > StateProvince.StateProvinceID
Ref: BreweryPost.PostedByID > UserAccount.UserAccountID [delete: no action]
Ref: BreweryPostLocation.BreweryPostID - BreweryPost.BreweryPostID [delete: cascade]
Ref: BreweryPostLocation.CityID > City.CityID
Ref: BreweryPostPhoto.BreweryPostID > BreweryPost.BreweryPostID [delete: cascade]
Ref: BreweryPostPhoto.PhotoID > Photo.PhotoID [delete: cascade]
Ref: BeerPost.PostedByID > UserAccount.UserAccountID [delete: no action]
Ref: BeerPost.BeerStyleID > BeerStyle.BeerStyleID
Ref: BeerPost.BrewedByID > BreweryPost.BreweryPostID
Ref: BeerPostPhoto.BeerPostID > BeerPost.BeerPostID [delete: cascade]
Ref: BeerPostPhoto.PhotoID > Photo.PhotoID [delete: cascade]
Ref: BeerPostComment.BeerPostID > BeerPost.BeerPostID
Ref: BeerPostComment.CommentedByID > UserAccount.UserAccountID [delete: no action]