yandex-music-api-go/internal/models/feed.go

// Package models provides data models for the Yandex Music API.
package models

import (
	"encoding/json"
)

// Feed represents the main feed from the Yandex Music API.
type Feed struct {
	BaseModel
	Days               []Day               `json:"days"`
	GeneratedPlaylists []GeneratedPlaylist `json:"generated_playlists"`
	PlayContexts       []PlayContext       `json:"play_contexts"`
}

// DeJSON deserializes a Feed from JSON data.
func (f *Feed) DeJSON(data []byte, c ClientInterface) (Model, error) {
	var raw map[string]json.RawMessage
	if err := json.Unmarshal(data, &raw); err != nil {
		return nil, err
	}

	feed := &Feed{BaseModel: *NewBaseModel(c)}

	if v, ok := raw["days"]; ok {
		var days []Day
		json.Unmarshal(v, &days)
		feed.Days = days
	}
	if v, ok := raw["generated_playlists"]; ok {
		var playlists []GeneratedPlaylist
		json.Unmarshal(v, &playlists)
		feed.GeneratedPlaylists = playlists
	}
	if v, ok := raw["play_contexts"]; ok {
		var contexts []PlayContext
		json.Unmarshal(v, &contexts)
		feed.PlayContexts = contexts
	}

	return feed, nil
}

// DeList deserializes a list of Feeds from JSON data.
func (f *Feed) DeList(data []byte, c ClientInterface) ([]Model, error) {
	var rawList []json.RawMessage
	if err := json.Unmarshal(data, &rawList); err != nil {
		return nil, err
	}

	result := make([]Model, 0, len(rawList))
	for _, item := range rawList {
		feed := &Feed{BaseModel: *NewBaseModel(c)}
		if err := json.Unmarshal(item, feed); err != nil {
			continue
		}
		result = append(result, feed)
	}
	return result, nil
}

// Day represents a day in the feed.
type Day struct {
	BaseModel
	Date               string              `json:"date"`
	Title              string              `json:"title"`
	Description        string              `json:"description"`
	Blocks             []DayBlock          `json:"blocks"`
	GeneratedPlaylists []GeneratedPlaylist `json:"generated_playlists"`
}

// DeJSON deserializes a Day from JSON data.
func (d *Day) DeJSON(data []byte, c ClientInterface) (Model, error) {
	var raw map[string]json.RawMessage
	if err := json.Unmarshal(data, &raw); err != nil {
		return nil, err
	}

	day := &Day{BaseModel: *NewBaseModel(c)}

	if v, ok := raw["date"]; ok {
		json.Unmarshal(v, &day.Date)
	}
	if v, ok := raw["title"]; ok {
		json.Unmarshal(v, &day.Title)
	}
	if v, ok := raw["description"]; ok {
		json.Unmarshal(v, &day.Description)
	}
	if v, ok := raw["blocks"]; ok {
		var blocks []DayBlock
		json.Unmarshal(v, &blocks)
		day.Blocks = blocks
	}
	if v, ok := raw["generated_playlists"]; ok {
		var playlists []GeneratedPlaylist
		json.Unmarshal(v, &playlists)
		day.GeneratedPlaylists = playlists
	}

	return day, nil
}

// DeList deserializes a list of Days from JSON data.
func (d *Day) DeList(data []byte, c ClientInterface) ([]Model, error) {
	var rawList []json.RawMessage
	if err := json.Unmarshal(data, &rawList); err != nil {
		return nil, err
	}

	result := make([]Model, 0, len(rawList))
	for _, item := range rawList {
		day := &Day{BaseModel: *NewBaseModel(c)}
		if err := json.Unmarshal(item, day); err != nil {
			continue
		}
		result = append(result, day)
	}
	return result, nil
}

// DayBlock represents a block in a day.
type DayBlock struct {
	BaseModel
	ID          string        `json:"id"`
	Type        string        `json:"type"`
	Title       string        `json:"title"`
	Description string        `json:"description"`
	Data        *DayBlockData `json:"data"`
}

// DayBlockData represents data in a day block.
type DayBlockData struct {
	Tracks            []Track            `json:"tracks"`
	Playlists         []Playlist         `json:"playlists"`
	Albums            []Album            `json:"albums"`
	Artists           []Artist           `json:"artists"`
	GeneratedPlaylist *GeneratedPlaylist `json:"generated_playlist"`
}

// GeneratedPlaylist represents a generated playlist.
type GeneratedPlaylist struct {
	BaseModel
	ID          string  `json:"id"`
	Title       string  `json:"title"`
	Description string  `json:"description"`
	CoverURI    string  `json:"cover_uri"`
	TrackCount  int     `json:"track_count"`
	DurationMs  int     `json:"duration_ms"`
	Kind        int     `json:"kind"`
	Revision    int     `json:"revision"`
	Type        string  `json:"type"`
	Available   bool    `json:"available"`
	Tracks      []Track `json:"tracks"`
}

// DeJSON deserializes a GeneratedPlaylist from JSON data.
func (gp *GeneratedPlaylist) DeJSON(data []byte, c ClientInterface) (Model, error) {
	var raw map[string]json.RawMessage
	if err := json.Unmarshal(data, &raw); err != nil {
		return nil, err
	}

	playlist := &GeneratedPlaylist{BaseModel: *NewBaseModel(c)}

	if v, ok := raw["id"]; ok {
		json.Unmarshal(v, &playlist.ID)
	}
	if v, ok := raw["title"]; ok {
		json.Unmarshal(v, &playlist.Title)
	}
	if v, ok := raw["description"]; ok {
		json.Unmarshal(v, &playlist.Description)
	}
	if v, ok := raw["cover_uri"]; ok {
		json.Unmarshal(v, &playlist.CoverURI)
	}
	if v, ok := raw["track_count"]; ok {
		json.Unmarshal(v, &playlist.TrackCount)
	}
	if v, ok := raw["duration_ms"]; ok {
		json.Unmarshal(v, &playlist.DurationMs)
	}
	if v, ok := raw["kind"]; ok {
		json.Unmarshal(v, &playlist.Kind)
	}
	if v, ok := raw["revision"]; ok {
		json.Unmarshal(v, &playlist.Revision)
	}
	if v, ok := raw["type"]; ok {
		json.Unmarshal(v, &playlist.Type)
	}
	if v, ok := raw["available"]; ok {
		json.Unmarshal(v, &playlist.Available)
	}
	if v, ok := raw["tracks"]; ok {
		var tracks []Track
		json.Unmarshal(v, &tracks)
		playlist.Tracks = tracks
	}

	return playlist, nil
}

// DeList deserializes a list of GeneratedPlaylists from JSON data.
func (gp *GeneratedPlaylist) DeList(data []byte, c ClientInterface) ([]Model, error) {
	var rawList []json.RawMessage
	if err := json.Unmarshal(data, &rawList); err != nil {
		return nil, err
	}

	result := make([]Model, 0, len(rawList))
	for _, item := range rawList {
		playlist := &GeneratedPlaylist{BaseModel: *NewBaseModel(c)}
		if err := json.Unmarshal(item, playlist); err != nil {
			continue
		}
		result = append(result, playlist)
	}
	return result, nil
}

// Event represents a feed event.
type Event struct {
	BaseModel
	Timestamp  string `json:"timestamp"`
	Type       string `json:"type"`
	TrackID    string `json:"track_id"`
	AlbumID    string `json:"album_id"`
	ArtistID   string `json:"artist_id"`
	PlaylistID string `json:"playlist_id"`
	Action     string `json:"action"`
}

// AlbumEvent represents an album event.
type AlbumEvent struct {
	BaseModel
	Album     *Album `json:"album"`
	Timestamp string `json:"timestamp"`
	Type      string `json:"type"`
	Action    string `json:"action"`
}

// ArtistEvent represents an artist event.
type ArtistEvent struct {
	BaseModel
	Artist    *Artist `json:"artist"`
	Timestamp string  `json:"timestamp"`
	Type      string  `json:"type"`
	Action    string  `json:"action"`
}

// TrackWithAds represents a track with ads.
type TrackWithAds struct {
	BaseModel
	Track    *Track    `json:"track"`
	Ads      []Ad      `json:"ads"`
	AdParams *AdParams `json:"ad_params"`
}

// Ad represents an ad.
type Ad struct {
	BaseModel
	ID          string `json:"id"`
	Type        string `json:"type"`
	Title       string `json:"title"`
	Description string `json:"description"`
	Image       string `json:"image"`
	URL         string `json:"url"`
	Duration    int    `json:"duration"`
}

// AdParams represents ad parameters.
type AdParams struct {
	BaseModel
	Frequency int    `json:"frequency"`
	MaxPerDay int    `json:"max_per_day"`
	Targeting string `json:"targeting"`
}