package mastodon

import (
	"context"
	"net/http"
)

// Instance hold information for mastodon instance.
type Instance struct {
	URI            string            `json:"uri"`
	Title          string            `json:"title"`
	Description    string            `json:"description"`
	ShortDescription    *string       `json:"short_description"`
	EMail          string            `json:"email"`
	Version        string            `json:"version,omitempty"`
	Thumbnail      string            `json:"thumbnail,omitempty"`
	URLs           map[string]string `json:"urls,omitempty"`
	Stats          *InstanceStats    `json:"stats,omitempty"`
	Languages      []string          `json:"languages"`
	ContactAccount *Account          `json:"account"`
	PollLimits     *PollLimit        `json:"poll_limits"`
	MaxTootChars   *int64            `json:"max_toot_chars"`
	MaxMediaAttachments   *int64     `json:"max_media_attachments"`
	UploadLimit    *int64            `json:"upload_limit"`
	BackgroundUploadLimit *int64     `json:"background_upload_limit"`
	AvatarUploadLimit *int64 	 `json:"avatar_upload_limit"`
	Configuration  *InstanceConf     `json:"configuration"`
	Rules          *[]map[string]string     `json:"rules"`
	Pleroma        *PleromaInstance  `json:"pleroma"`
}

// InstanceStats hold information for mastodon instance stats.
type InstanceStats struct {
	UserCount   int64 `json:"user_count"`
	StatusCount int64 `json:"status_count"`
	DomainCount int64 `json:"domain_count"`
}

// InstanceConf hold information for mastodon instances
type InstanceConf struct {
	Statuses     StatusesConf    `json:"statuses"`
}

type StatusesConf struct {
	MaxCharacters        int64 `json:"max_characters"`
	MaxMediaAttachments  int64 `json:"max_media_attachments"`
}

type PollLimit struct {
	MaxExpiration   int64 `json:"max_expiration"`
	MaxOptionChars  int64 `json:"max_option_chars"`
	MaxOptions      int64 `json:"max_options"`
	MinExpiration   int64 `json:"min_expiration"`
}

// For about instance if this Pleroma
type PleromaInstance struct {
	MetaData MetaData `json:"metadata"`
}

type MetaData struct {
	Features     *[]string       `json:"features"`
	Federation   FederationInfo  `json:"federation"`
}

type FederationInfo struct {
	Enabled        bool       `json:"enabled"`
	MrfPolicies    []string   `json:"mrf_policies"`
	MrfSimple      MRFSimple  `json:"mrf_simple"`
}

type MRFSimple struct {
	Reject                   []string `json:"reject"`
	MediaNsfw                []string `json:"media_nsfw"`
	FederatedTimelineRemoval []string `json:"federated_timeline_removal"`
	RejectDeletes            []string `json:"reject_deletes"`
}


// GetInstance return Instance.
func (c *Client) GetInstance(ctx context.Context) (*Instance, error) {
	var instance Instance
	err := c.doAPI(ctx, http.MethodGet, "/api/v1/instance", nil, &instance, nil)
	if err != nil {
		return nil, err
	}
	return &instance, nil
}

// WeeklyActivity hold information for mastodon weekly activity.
type WeeklyActivity struct {
	Week          Unixtime `json:"week"`
	Statuses      int64    `json:"statuses,string"`
	Logins        int64    `json:"logins,string"`
	Registrations int64    `json:"registrations,string"`
}

// GetInstanceActivity return instance activity.
func (c *Client) GetInstanceActivity(ctx context.Context) ([]*WeeklyActivity, error) {
	var activity []*WeeklyActivity
	err := c.doAPI(ctx, http.MethodGet, "/api/v1/instance/activity", nil, &activity, nil)
	if err != nil {
		return nil, err
	}
	return activity, nil
}

// GetInstancePeers return instance peers.
func (c *Client) GetInstancePeers(ctx context.Context) ([]string, error) {
	var peers []string
	err := c.doAPI(ctx, http.MethodGet, "/api/v1/instance/peers", nil, &peers, nil)
	if err != nil {
		return nil, err
	}
	return peers, nil
}

// GetInstanceEmojis return instance emojis.
func (c *Client) GetInstanceEmojis(ctx context.Context) ([]*Emoji, error) {
	var emojis []*Emoji
	err := c.doAPI(ctx, http.MethodGet, "/api/v1/custom_emojis", nil, &emojis, nil)
	if err != nil {
		return nil, err
	}
	return emojis, nil
}