package types

import (
	"time"

	"github.com/google/uuid"
	"gorm.io/gorm"
)

type UUID_ID struct {
	ID uuid.UUID `gorm:"type:uuid;primaryKey"`
}

func (u *UUID_ID) BeforeCreate(tx *gorm.DB) (err error) {
	if u.ID == uuid.Nil {
		u.ID, _ = uuid.NewV7()
	}
	return
}

// admin / regular. DO NOT SET DIRECTLY. Use RoleAdmin and RoleUser.
type Role int

const (
	RoleUser  Role = iota // 0
	RoleAdmin             // 1
)

type User struct {
	UUID_ID

	Handle string `gorm:"uniqueIndex;not null"`
	Name   string
	Email  string `gorm:"uniqueIndex;not null"`
	Bio    string

	Role Role `gorm:"default:0"` // default is RoleUser (0)

	PasswordHash   string `gorm:"not null"`
	HackatimeToken string

	Config UserConfig

	Sessions   []Session
	SSHPubKeys []SSHPubKey
	Repos      []Repo
	Gists      []Gist
}

type UserConfig struct {
	UUID_ID

	UserID uuid.UUID `gorm:"index;not null"`
	User   *User     `gorm:"not null;constraint:OnUpdate:CASCADE,OnDelete:CASCADE;"`

	GitDefaultBranch string `gorm:"default:master;not null"`
}

type SSHPubKey struct {
	UUID_ID

	UserID uuid.UUID `gorm:"not null;index;uniqueIndex:idx_user_ssh_name"`
	User   *User     `gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE;"`

	Name string `gorm:"not null;uniqueIndex:idx_user_ssh_name"`

	PublicKey   string `gorm:"not null"`
	Fingerprint string `gorm:"uniqueIndex;not null"`
	Algorithm   string `gorm:"not null"`
}

type Session struct {
	UUID_ID

	UserID *uuid.UUID
	User   *User `gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE;"`

	CreatedAt ISOTime `gorm:"autoCreateTime"`
}

type Repo struct {
	UUID_ID
	CreatedAt ISOTime `gorm:"autoCreateTime"`

	UserID *uuid.UUID `gorm:"not null;uniqueIndex:idx_user_repo_name"`
	User   *User      `gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE;"`

	Name          string `gorm:"uniqueIndex:idx_user_repo_name"` // idx_user_repo_name prevents two user's repos from having the same name.
	HackatimeName string

	Description string
	BaseBranch  string `gorm:"default:master"`
	IsPrivate   bool   `gorm:"not null"`

	Config RepoConfig `gorm:"foreignKey:RepoID"`

	Issues      []Issue `gorm:"foreignKey:RepoID"`
	NextIssueID uint    `gorm:"not null;default:1"`
}

type RepoConfig struct {
	UUID_ID

	RepoID uuid.UUID `gorm:"index;not null"`
	Repo   *Repo     `gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE;"`

	AllowAnonymousIssues bool `gorm:"default:true"`
	AllowNewIssues       bool `gorm:"default:true"`
}

type Issue struct {
	UUID_ID

	IssueID   uint
	CreatedAt ISOTime `gorm:"autoCreateTime"`

	RepoID *uuid.UUID
	Repo   *Repo `gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE;"`

	UserID *uuid.UUID
	User   *User `gorm:"constraint:OnUpdate:CASCADE,OnDelete:SET NULL;"`

	Title       string `gorm:"not null;"`
	Description string `gorm:"not null;"`

	Status string     `gorm:"default:open"` // open / close
	Tags   []IssueTag // bug / suggestiom / etc
}

type IssueTag struct {
	UUID_ID

	IssueID uuid.UUID // the actual ID.
	Issue   *Issue    // the actual ID.

	Name string
}

type IssueComment struct {
	UUID_ID

	IssueID *uuid.UUID
	Issue   *Issue `gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE;"` // deleting an issue deletes its comments

	UserID *uuid.UUID
	User   *User `gorm:"constraint:OnUpdate:CASCADE,OnDelete:SET NULL;"` // deleting a user anonymizes their comments instead of deleting them

	Comment string `gorm:"not null;"`

	CreatedAt ISOTime `gorm:"autoCreateTime"`
}

type OAuthState struct {
	UUID_ID

	UserID uuid.UUID `gorm:"not null;"`
	User   *User     `gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE;"`

	State     string    `gorm:"uniqueIndex;size:64;not null"`
	Verifier  string    `gorm:"size:128;not null"`
	ExpiresAt time.Time `gorm:"index;not null"`
	CreatedAt ISOTime   `gorm:"autoCreateTime"`
}

type Invite struct {
	UUID_ID

	UserID *uuid.UUID // optional due to possible cli-issued admin invite.
	User   *User

	Role      uint      `gorm:"default:0;"` // role to assign once it's exchanged. defaults to normie.
	Token     string    `gorm:"default:8;not null"`
	ExpiresAt time.Time `gorm:"index;not null"`
	CreatedAt ISOTime   `gorm:"autoCreateTime"`
}

type Gist struct {
	UUID_ID

	UserID uuid.UUID `gorm:"not null"`
	User   *User

	Title   string
	Content string `gorm:"not null"`

	CreatedAt ISOTime `gorm:"autoCreateTime"`
}