/**
 * Postiz platform specifications.
 *
 * Character limits, required fields, media rules and postType defaults per
 * Postiz provider identifier. Drives the planner palette and inline editor:
 * dropping a platform onto the canvas creates a `post` node pre-tagged with
 * that platform's constraints.
 *
 * Limits reflect Postiz 5.x provider handlers as of 2026-04. Numbers match
 * what Postiz's `settings.__type` handlers enforce server-side.
 */

export type PostizPlatformId =
	| 'x'
	| 'linkedin'
	| 'facebook'
	| 'instagram'
	| 'threads'
	| 'bluesky'
	| 'mastodon'
	| 'youtube'
	| 'tiktok'
	| 'reddit'
	| 'pinterest'
	| 'discord'
	| 'slack';

export type PostizMediaKind = 'image' | 'video' | 'gif';
export type PostizPostType =
	| 'text'
	| 'thread'
	| 'image'
	| 'carousel'
	| 'video'
	| 'short'
	| 'story'
	| 'reel'
	| 'link';

export interface PlatformSpec {
	id: PostizPlatformId;
	label: string;
	icon: string;
	color: string;
	/** Main content character limit (per segment for threads). */
	charLimit: number;
	/** Optional title/subject limit — rendered as a separate input when set. */
	titleLimit?: number;
	titleRequired?: boolean;
	/** Supports a native multi-segment thread via Postiz `value[]`. */
	supportsThreads: boolean;
	/** Media types the platform accepts (drives the inline editor hint). */
	mediaTypes: PostizMediaKind[];
	/** Maximum media items per post. 0 = media not allowed. */
	maxMedia: number;
	/** Media is required (cannot post text-only). */
	mediaRequired?: boolean;
	/** Default postType when dropped on the canvas. */
	defaultPostType: PostizPostType;
	/** Extra postTypes selectable for this platform. */
	postTypes: PostizPostType[];
	/** Hashtag count limit (soft warning when exceeded). 0 = no hashtags. */
	hashtagLimit: number;
	/** Human-readable note displayed under the content editor. */
	note: string;
	/** Extra per-platform input fields rendered in the inline editor. */
	extraFields?: PlatformExtraField[];
}

export interface PlatformExtraField {
	key: string;
	label: string;
	type: 'text' | 'select' | 'textarea' | 'checkbox';
	placeholder?: string;
	options?: string[];
	required?: boolean;
	maxLength?: number;
}

export const PLATFORM_SPECS: Record<PostizPlatformId, PlatformSpec> = {
	x: {
		id: 'x',
		label: 'X (Twitter)',
		icon: '𝕏',
		color: '#000000',
		charLimit: 280,
		supportsThreads: true,
		mediaTypes: ['image', 'video', 'gif'],
		maxMedia: 4,
		defaultPostType: 'text',
		postTypes: ['text', 'thread', 'image', 'video'],
		hashtagLimit: 3,
		note: '280 chars/tweet. Threads supported. Up to 4 media per tweet.',
		extraFields: [
			{
				key: 'who_can_reply_post', label: 'Who can reply',
				type: 'select', options: ['everyone', 'following', 'mentionedUsers'],
			},
		],
	},
	linkedin: {
		id: 'linkedin',
		label: 'LinkedIn',
		icon: 'in',
		color: '#0A66C2',
		charLimit: 3000,
		supportsThreads: false,
		mediaTypes: ['image', 'video'],
		maxMedia: 9,
		defaultPostType: 'text',
		postTypes: ['text', 'image', 'carousel', 'video'],
		hashtagLimit: 5,
		note: '3000 chars. Up to 9 images or 1 video. 3–5 hashtags recommended.',
		extraFields: [
			{ key: 'post_to_company', label: 'Post as company page', type: 'checkbox' },
		],
	},
	facebook: {
		id: 'facebook',
		label: 'Facebook',
		icon: 'f',
		color: '#1877F2',
		charLimit: 63206,
		supportsThreads: false,
		mediaTypes: ['image', 'video'],
		maxMedia: 10,
		defaultPostType: 'text',
		postTypes: ['text', 'image', 'video', 'link'],
		hashtagLimit: 6,
		note: 'Effectively unlimited text. First 250 chars show in preview.',
	},
	instagram: {
		id: 'instagram',
		label: 'Instagram',
		icon: '📷',
		color: '#E4405F',
		charLimit: 2200,
		supportsThreads: false,
		mediaTypes: ['image', 'video'],
		maxMedia: 10,
		mediaRequired: true,
		defaultPostType: 'image',
		postTypes: ['image', 'carousel', 'reel', 'story'],
		hashtagLimit: 30,
		note: '2200-char caption. Media required. Up to 10 items in a carousel.',
		extraFields: [
			{
				key: 'post_type', label: 'Post type',
				type: 'select', options: ['post', 'reel', 'story'],
			},
		],
	},
	threads: {
		id: 'threads',
		label: 'Threads',
		icon: '@',
		color: '#000000',
		charLimit: 500,
		supportsThreads: true,
		mediaTypes: ['image', 'video'],
		maxMedia: 10,
		defaultPostType: 'text',
		postTypes: ['text', 'thread', 'image'],
		hashtagLimit: 1,
		note: '500 chars/post. Threads supported. One hashtag per post.',
	},
	bluesky: {
		id: 'bluesky',
		label: 'Bluesky',
		icon: '🦋',
		color: '#0085FF',
		charLimit: 300,
		supportsThreads: true,
		mediaTypes: ['image', 'gif'],
		maxMedia: 4,
		defaultPostType: 'text',
		postTypes: ['text', 'thread', 'image'],
		hashtagLimit: 3,
		note: '300 chars/post. Threads supported. Up to 4 images.',
	},
	mastodon: {
		id: 'mastodon',
		label: 'Mastodon',
		icon: '🐘',
		color: '#6364FF',
		charLimit: 500,
		supportsThreads: true,
		mediaTypes: ['image', 'video', 'gif'],
		maxMedia: 4,
		defaultPostType: 'text',
		postTypes: ['text', 'thread', 'image'],
		hashtagLimit: 10,
		note: '500 chars/toot (instance-dependent). Threads via replies.',
		extraFields: [
			{
				key: 'visibility', label: 'Visibility',
				type: 'select', options: ['public', 'unlisted', 'private', 'direct'],
			},
			{ key: 'spoiler_text', label: 'Content warning', type: 'text', placeholder: 'Optional CW' },
		],
	},
	youtube: {
		id: 'youtube',
		label: 'YouTube',
		icon: '▶️',
		color: '#FF0000',
		charLimit: 5000,
		titleLimit: 100,
		titleRequired: true,
		supportsThreads: false,
		mediaTypes: ['video'],
		maxMedia: 1,
		mediaRequired: true,
		defaultPostType: 'video',
		postTypes: ['video', 'short'],
		hashtagLimit: 15,
		note: 'Title ≤100 chars. Description ≤5000. Video required.',
		extraFields: [
			{
				key: 'type', label: 'Visibility',
				type: 'select', options: ['public', 'unlisted', 'private'],
			},
			{
				key: 'category', label: 'Category ID',
				type: 'select',
				options: ['1', '2', '10', '15', '17', '19', '20', '22', '23', '24', '25', '26', '27', '28'],
			},
		],
	},
	tiktok: {
		id: 'tiktok',
		label: 'TikTok',
		icon: '🎵',
		color: '#000000',
		charLimit: 2200,
		titleLimit: 150,
		supportsThreads: false,
		mediaTypes: ['video'],
		maxMedia: 1,
		mediaRequired: true,
		defaultPostType: 'video',
		postTypes: ['video'],
		hashtagLimit: 10,
		note: 'Caption ≤2200 chars. Video required. Short-form vertical.',
		extraFields: [
			{
				key: 'privacy_level', label: 'Privacy',
				type: 'select', options: ['PUBLIC_TO_EVERYONE', 'MUTUAL_FOLLOW_FRIENDS', 'SELF_ONLY'],
			},
			{ key: 'disable_duet', label: 'Disable duets', type: 'checkbox' },
			{ key: 'disable_comment', label: 'Disable comments', type: 'checkbox' },
		],
	},
	reddit: {
		id: 'reddit',
		label: 'Reddit',
		icon: '🔶',
		color: '#FF4500',
		charLimit: 40000,
		titleLimit: 300,
		titleRequired: true,
		supportsThreads: false,
		mediaTypes: ['image', 'video'],
		maxMedia: 1,
		defaultPostType: 'text',
		postTypes: ['text', 'link', 'image', 'video'],
		hashtagLimit: 0,
		note: 'Title ≤300 chars. Hashtags unused. Subreddit required.',
		extraFields: [
			{ key: 'subreddit', label: 'Subreddit', type: 'text', required: true, placeholder: 'r/example' },
			{
				key: 'flair', label: 'Flair (optional)',
				type: 'text', placeholder: 'Flair text',
			},
		],
	},
	pinterest: {
		id: 'pinterest',
		label: 'Pinterest',
		icon: '📌',
		color: '#E60023',
		charLimit: 500,
		titleLimit: 100,
		supportsThreads: false,
		mediaTypes: ['image', 'video'],
		maxMedia: 1,
		mediaRequired: true,
		defaultPostType: 'image',
		postTypes: ['image', 'video'],
		hashtagLimit: 20,
		note: 'Pin description ≤500. Title ≤100. Image or video required.',
		extraFields: [
			{ key: 'link', label: 'Destination URL', type: 'text', placeholder: 'https://' },
			{ key: 'board', label: 'Board', type: 'text', placeholder: 'Board name' },
		],
	},
	discord: {
		id: 'discord',
		label: 'Discord',
		icon: '🎮',
		color: '#5865F2',
		charLimit: 2000,
		supportsThreads: false,
		mediaTypes: ['image', 'video', 'gif'],
		maxMedia: 10,
		defaultPostType: 'text',
		postTypes: ['text', 'image'],
		hashtagLimit: 0,
		note: '2000 chars per message. Posts into a configured channel.',
	},
	slack: {
		id: 'slack',
		label: 'Slack',
		icon: '#',
		color: '#4A154B',
		charLimit: 40000,
		supportsThreads: false,
		mediaTypes: ['image'],
		maxMedia: 10,
		defaultPostType: 'text',
		postTypes: ['text'],
		hashtagLimit: 0,
		note: 'Long-form message into a configured channel.',
	},
};

export const ALL_PLATFORM_IDS: PostizPlatformId[] = [
	'x', 'linkedin', 'facebook', 'instagram', 'threads', 'bluesky',
	'mastodon', 'youtube', 'tiktok', 'reddit', 'pinterest', 'discord', 'slack',
];

export function getPlatformSpec(platform: string): PlatformSpec | null {
	return (PLATFORM_SPECS as Record<string, PlatformSpec>)[platform] || null;
}

export function charLimitFor(platform: string): number {
	return getPlatformSpec(platform)?.charLimit ?? 2200;
}