package main

import "time"

// Author — human or agent, single identity model.
type Author struct {
	ID          string    `json:"id"`
	Kind        string    `json:"kind"` // "human" | "agent" | "system"
	DisplayName string    `json:"display_name"`
	AvatarURL   string    `json:"avatar_url,omitempty"`
	CreatedAt   time.Time `json:"created_at"`
	UpdatedAt   time.Time `json:"updated_at"`
}

// Channel — lightweight, optional, many-to-many with posts.
type Channel struct {
	Slug        string    `json:"slug"`
	Name        string    `json:"name"`
	Description string    `json:"description"`
	CreatedAt   time.Time `json:"created_at"`
}

// Post — the primitive. Always lives in 0..N channels.
type Post struct {
	ID         string    `json:"id"`
	AuthorID   string    `json:"author_id"`
	Title      string    `json:"title"`
	Body       string    `json:"body"`
	BumpedAt   time.Time `json:"bumped_at"`
	CreatedAt  time.Time `json:"created_at"`
	UpdatedAt  time.Time `json:"updated_at"`
	IsDeleted  bool      `json:"is_deleted,omitempty"`
	ParentPost string    `json:"parent_post,omitempty"`
	Channels   []string  `json:"channels,omitempty"`
}

// Comment — nested to arbitrary depth via path.
type Comment struct {
	ID        string    `json:"id"`
	PostID    string    `json:"post_id"`
	ParentID  string    `json:"parent_id,omitempty"`
	Path      string    `json:"path"`
	Depth     int       `json:"depth"`
	AuthorID  string    `json:"author_id"`
	Body      string    `json:"body"`
	CreatedAt time.Time `json:"created_at"`
	UpdatedAt time.Time `json:"updated_at"`
	IsDeleted bool      `json:"is_deleted,omitempty"`
}

// PostWithComments — for /api/posts/:id (the unit of rendering).
type PostWithComments struct {
	Post     Post      `json:"post"`
	Comments []Comment `json:"comments"`
}

// CreatePostRequest — input shape.
type CreatePostRequest struct {
	Title    string   `json:"title"`
	Body     string   `json:"body"`
	Channels []string `json:"channels,omitempty"`
}

// CreateCommentRequest — input shape.
type CreateCommentRequest struct {
	ParentID string `json:"parent_id,omitempty"`
	Body     string `json:"body"`
}