Project Code_Mentoring {
  database_type: 'PostgreSQL'
  Note: 'learn.codementoring.co'
}

// ---------------------------------------------- User
Table User as U {
  id uuid [pk, unique, not null]
  firstName varchar [not null]
  lastName varchar [not null]
  email varchar [not null, unique]
  createdAt timestamp [not null]
  updatedAt timestamp
}

Table UserPreferences {
  id uuid [pk, unique, not null]
  userId uuid [ref: - U.id, not null]
  practiceGoal integer [note: '1-4']
  why varchar
  codingAbility integer [note: '1-10']
}

// ---------------------------------------------- Path
Table Path {
  id uuid [pk, unique, not null]
  name varchar [not null, unique]
  icon varchar [not null]
  description varchar [not null]
  createdAt timestamp [not null]
  updatedAt timestamp
  characterId uuid [ref: - Character.id, not null]
}

Table UserPath {
  id uuid [pk, unique, not null]
  userId uuid [ref: > U.id, not null]
  pathId uuid [ref: > Path.id, not null]
  completed boolean [not null]
  joined timestamp [not null]
}

// ---------------------------------------------- Concept
Table Concept {
  id uuid [pk, unique, not null]
  name varchar [not null, unique]
  description text [not null]
  icon varchar [not null]
  taughtIn uuid [ref: - M.id, not null]
}

Table UserConcepts {
  userId uuid [ref: > U.id, not null]
  conceptId uuid [ref: > Concept.id, not null]
  learned timestamp [not null]
}


// ---------------------------------------------- Module
enum module_type {
  lesson
  assignment
}
Table Module as M{
  id uuid [pk, unique, not null]
  name varchar [not null, unique]
  icon varchar [not null]
  type module_type [not null, note: 'assignment OR lesson']
  previous uuid [ref: > Module.id]
  pathId uuid [ref: > Path.id, not null]
}

Table UserModule {
  id uuid [pk, unique, not null]
  userId uuid [ref: > U.id, not null]
  moduleId uuid [ref: > M.id, not null]
  completedAt timestamp
}

// ---------------------------------------------- Assignment
Table Assignment {
  id uuid [pk, unique, not null]
  moduleId uuid [ref: > M.id, not null]
  description varchar [not null]
}

Table AssignmentFile as AF {
  id uuid [pk, unique, not null]
  author uuid [ref: > U.id, not null]
  assignmentId uuid [ref: > Assignment.id, not null]
  name varchar [not null]
  type varchar [not null, note: 'Mimetype']
  content text [not null]
}

// ---------------------------------------------- Lesson
Table Lesson as L {
  id uuid [pk, unique, not null]
  moduleId uuid [ref: > M.id, not null]
}

Table StorySection as SS {
  id uuid [pk, unique, not null]
  lessonId uuid [ref: > L.id, not null]
  order int [not null]
  content text [not null, note: "Markdown content"]
  teaches uuid [ref: - Concept.id]
}


// ---------------------------------------------- Character
table Character {
  id uuid [pk, unique, not null]
  name varchar [not null, unique]
  displayName varchar [not null, unique]
}


// ---------------------------------------------- Friends
table Friends {
  user1Id uuid [ref: > U.id, not null]
  user2Id uuid [ref: > U.id, not null]
  since timestamp [not null]
}

table FriendRequests {
  from uuid [ref: > U.id, not null]
  to uuid [ref: > U.id, not null]
  accepted boolean [note: '
    null = Pending
    true = create Friend join
    false = Rejected
  ']
  requested timestamp [not null]
}