package storage

import (
	"slices"

	"gorm.io/gorm"
)

// A role is, in concept, similar to how Discord handles roles
// Some permission can be either disallowed (&false), don't care (nil) or allowed (&true)
// Don't care just says to use the value from the next lower role where it is set
type Role struct {
	// TODO: More control options
	// Extend upon whatever Masto, Akkoma and Misskey have
	// Lots of details please

	// --- Role metadata ---

	// Include full db model stuff
	gorm.Model

	// Name of the role
	Name string

	// Priority of the role
	// Lower priority gets applied first and thus overwritten by higher priority ones
	// If two roles have the same priority, the order is undetermined and may be random
	// Default priority for new roles is 1 to always overwrite default user
	// And full admin has max priority possible
	Priority uint
	// Whether this role is for a for a single user only (like custom, per user permissions in Discord)
	// If yes, Name will be the id of the user in question
	IsUserRole bool

	// Whether this role is one built into Linstrom from the start or not
	// Note: Built-in roles can't be modified
	IsBuiltIn bool

	// --- User permissions ---
	CanSendMedia             *bool
	CanSendCustomEmotes      *bool
	CanSendCustomReactions   *bool
	CanSendPublicNotes       *bool
	CanSendLocalNotes        *bool
	CanSendFollowerOnlyNotes *bool
	CanSendPrivateNotes      *bool
	CanSendReplies           *bool
	CanQuote                 *bool
	CanBoost                 *bool
	CanIncludeLinks          *bool
	CanIncludeSurvey         *bool

	CanChangeDisplayName *bool

	BlockedUsers     []string `gorm:"type:bytes;serializer:gob"`
	CanSubmitReports *bool
	CanLogin         *bool

	CanMentionOthers     *bool
	HasMentionCountLimit *bool
	MentionLimit         *uint32

	// CanViewBoosts *bool
	// CanViewQuotes *bool
	// CanViewMedia *bool
	// CanViewCustomEmotes *bool

	// --- Automod ---
	AutoNsfwMedia                *bool
	AutoCwPosts                  *bool
	AutoCwPostsText              *string
	ScanCreatedPublicNotes       *bool
	ScanCreatedLocalNotes        *bool
	ScanCreatedFollowerOnlyNotes *bool
	ScanCreatedPrivateNotes      *bool
	DisallowInteractionsWith     []string `gorm:"type:bytes;serializer:gob"`

	WithholdNotesForManualApproval *bool
	WithholdNotesBasedOnRegex      *bool
	WithholdNotesRegexes           []string `gorm:"type:bytes;serializer:gob"`

	// --- Admin perms ---
	// If set, counts as all permissions being set as given and all restrictions being disabled
	FullAdmin                          *bool
	CanAffectOtherAdmins               *bool
	CanDeleteNotes                     *bool
	CanConfirmWithheldNotes            *bool
	CanAssignRoles                     *bool
	CanSupressInteractionsBetweenUsers *bool
	CanOverwriteDisplayNames           *bool
	CanManageCustomEmotes              *bool
	CanViewDeletedNotes                *bool
	CanRecoverDeletedNotes             *bool
	CanManageAvatarDecorations         *bool
	CanManageAds                       *bool
	CanSendAnnouncements               *bool
}

/*
Mastodon permissions (highest permission to lowest):
- Admin
- Devops
- View Audit log
- View Dashboard
- Manage Reports
- Manage Federation
- Manage Settings
- Manage Blocks
- Manage Taxonomies
- Manage Appeals
- Manage Users
- Manage Invites
- Manage Rules
- Manage Announcements
- Manage Custom Emojis
- Manage Webhooks
- Invite Users
- Manage Roles
- Manage User Access
- Delete User Data
*/

/*
Misskey "permissions" (no order):
- Global timeline available (interact with global timeline I think)
- Local timeline available (same as global, but for local)
- b-something timeline available
- Can send public notes
- How many mentions a note can have
- Can invite others
- How many invites can be sent
- InviteLimitCycle (whatever that means)
- Invite Expiration time (duration of how long invites stay valid I think)
- Manage custom emojis
- Manage custom avatar decorations
- Seach for notes
- Use translator
- Hide ads from self
- How much storage space the user has
- Whether to mark all posts from account as nsfw
- max number of pinned messages
- max number of antennas
- max number of muted words
- max number of webhooks
- max number of clips
- max number of notes contained in a clip (? I think. Don't know enough about clips)
- Max number of lists of users
- max number of users in a user list
- rate limit multiplier
- max number of applied avatar decorations
*/

func (s *Storage) NewEmptyRole(name string) (*Role, error) {
	_, err := s.FindRoleByName(name)
	switch err {
	case nil:
		return nil, ErrEntryAlreadyExists
	case ErrEntryNotFound: // Empty case, since this is what we want
	default:
		return nil, err
	}

	newRole := Role{Name: name}
	err = s.db.Create(&newRole).Error
	if err != nil {
		return nil, err
	}
	return &newRole, nil
}

func (s *Storage) FindRoleByName(name string) (*Role, error) {
	role := Role{}
	err := s.db.Where("name = ?", name).First(&role).Error
	switch err {
	case nil:
		return &role, nil
	case gorm.ErrRecordNotFound:
		return nil, ErrEntryNotFound
	default:
		return nil, err
	}
}

func CollapseRolesIntoOne(roles ...*Role) *Role {
	// TODO: Can I make a fucking script for automating this bullshit function?
	// I. Do. Not. Want. To. Manually adjust this every time I change something about Roles
	startingRole := DefaultUserRole
	slices.SortFunc(roles, func(a, b *Role) int {
		return int(int64(a.Priority) - int64(b.Priority))
	})
	for _, role := range roles {
		if role.CanSendMedia != nil {
			*startingRole.CanSendMedia = *role.CanSendMedia
		}
		if role.CanSendCustomEmotes != nil {
			*startingRole.CanSendCustomEmotes = *role.CanSendCustomEmotes
		}
		if role.CanSendCustomReactions != nil {
			*startingRole.CanSendCustomReactions = *role.CanSendCustomReactions
		}
		if role.CanSendPublicNotes != nil {
			*startingRole.CanSendPublicNotes = *role.CanSendPublicNotes
		}
		if role.CanSendLocalNotes != nil {
			*startingRole.CanSendLocalNotes = *role.CanSendLocalNotes
		}
		if role.CanSendFollowerOnlyNotes != nil {
			*startingRole.CanSendFollowerOnlyNotes = *role.CanSendFollowerOnlyNotes
		}
		if role.CanSendPrivateNotes != nil {
			*startingRole.CanSendPrivateNotes = *role.CanSendPrivateNotes
		}
		if role.CanSendReplies != nil {
			*startingRole.CanSendReplies = *role.CanSendReplies
		}
		if role.CanQuote != nil {
			*startingRole.CanQuote = *role.CanQuote
		}
		if role.CanBoost != nil {
			*startingRole.CanBoost = *role.CanBoost
		}
		if role.CanIncludeLinks != nil {
			*startingRole.CanIncludeLinks = *role.CanIncludeLinks
		}
		if role.CanIncludeSurvey != nil {
			*startingRole.CanIncludeSurvey = *role.CanIncludeSurvey
		}
		if role.CanChangeDisplayName != nil {
			*startingRole.CanChangeDisplayName = *role.CanChangeDisplayName
		}
		if role.BlockedUsers != nil {
			startingRole.BlockedUsers = append(startingRole.BlockedUsers, role.BlockedUsers...)
		}
		if role.CanSubmitReports != nil {
			*startingRole.CanSubmitReports = *role.CanSubmitReports
		}
		if role.CanLogin != nil {
			*startingRole.CanLogin = *role.CanLogin
		}
		if role.CanMentionOthers != nil {
			*startingRole.CanMentionOthers = *role.CanMentionOthers
		}
		if role.HasMentionCountLimit != nil {
			*startingRole.HasMentionCountLimit = *role.HasMentionCountLimit
			*startingRole.MentionLimit = *role.MentionLimit
		}
		if role.AutoNsfwMedia != nil {
			*startingRole.AutoNsfwMedia = *role.AutoNsfwMedia
		}
		if role.AutoCwPosts != nil {
			*startingRole.AutoCwPosts = *role.AutoCwPosts
		}
		if role.AutoCwPostsText != nil {
			*startingRole.AutoCwPostsText = *role.AutoCwPostsText
		}
		if role.ScanCreatedPublicNotes != nil {
			*startingRole.ScanCreatedPublicNotes = *role.ScanCreatedPublicNotes
		}
		if role.ScanCreatedLocalNotes != nil {
			*startingRole.ScanCreatedLocalNotes = *role.ScanCreatedLocalNotes
		}
		if role.ScanCreatedFollowerOnlyNotes != nil {
			*startingRole.ScanCreatedFollowerOnlyNotes = *role.ScanCreatedFollowerOnlyNotes
		}
		if role.ScanCreatedPrivateNotes != nil {
			*startingRole.ScanCreatedPrivateNotes = *role.ScanCreatedPrivateNotes
		}
		if role.DisallowInteractionsWith != nil {
			startingRole.DisallowInteractionsWith = append(startingRole.DisallowInteractionsWith, role.DisallowInteractionsWith...)
		}
		if role.WithholdNotesForManualApproval != nil {
			*startingRole.WithholdNotesForManualApproval = *role.WithholdNotesForManualApproval
		}
		if role.WithholdNotesBasedOnRegex != nil {
			*startingRole.WithholdNotesBasedOnRegex = *role.WithholdNotesBasedOnRegex
			startingRole.WithholdNotesRegexes = append(startingRole.WithholdNotesRegexes, role.WithholdNotesRegexes...)
		}
		if role.FullAdmin != nil {
			*startingRole.FullAdmin = *role.FullAdmin
		}
		if role.CanAffectOtherAdmins != nil {
			*startingRole.CanAffectOtherAdmins = *role.CanAffectOtherAdmins
		}
		if role.CanDeleteNotes != nil {
			*startingRole.CanDeleteNotes = *role.CanDeleteNotes
		}
		if role.CanConfirmWithheldNotes != nil {
			*startingRole.CanConfirmWithheldNotes = *role.CanConfirmWithheldNotes
		}
		if role.CanAssignRoles != nil {
			*startingRole.CanAssignRoles = *role.CanAssignRoles
		}
		if role.CanSupressInteractionsBetweenUsers != nil {
			*startingRole.CanSupressInteractionsBetweenUsers = *role.CanSupressInteractionsBetweenUsers
		}
		if role.CanOverwriteDisplayNames != nil {
			*startingRole.CanOverwriteDisplayNames = *role.CanOverwriteDisplayNames
		}
		if role.CanManageCustomEmotes != nil {
			*startingRole.CanManageCustomEmotes = *role.CanManageCustomEmotes
		}
		if role.CanViewDeletedNotes != nil {
			*startingRole.CanViewDeletedNotes = *role.CanViewDeletedNotes
		}
		if role.CanRecoverDeletedNotes != nil {
			*startingRole.CanRecoverDeletedNotes = *role.CanRecoverDeletedNotes
		}
		if role.CanManageAvatarDecorations != nil {
			*startingRole.CanManageAvatarDecorations = *role.CanManageAvatarDecorations
		}
		if role.CanManageAds != nil {
			*startingRole.CanManageAds = *role.CanManageAds
		}
		if role.CanSendAnnouncements != nil {
			*startingRole.CanSendAnnouncements = *role.CanSendAnnouncements
		}
	}
	return &startingRole
}