use apb::{ActivityMut, Base, BaseMut, Object, ObjectMut};

use leptos::*;
use crate::{prelude::*, WEBFINGER};

#[derive(Debug, Clone, Copy, Default)]
pub struct ReplyControls {
	pub context: RwSignal<Option<String>>,
	pub reply_to: RwSignal<Option<String>>,
}

impl ReplyControls {
	pub fn reply(&self, oid: &str) {
		if let Some(obj) = CACHE.get(oid) {
			self.context.set(obj.context().id());
			self.reply_to.set(obj.id().ok().map(|x| x.to_string()));
		}
	}

	pub fn clear(&self) {
		self.context.set(None);
		self.reply_to.set(None);
	}
}

fn post_author(post_id: &str) -> Option<crate::Object> {
	let usr = CACHE.get(post_id)?.attributed_to().id()?;
	CACHE.get(&usr)
}

#[component]
pub fn PostBox(advanced: WriteSignal<bool>) -> impl IntoView {
	let auth = use_context::<Auth>().expect("missing auth context");
	let reply = use_context::<ReplyControls>().expect("missing reply controls");
	let (posting, set_posting) = create_signal(false);
	let (error, set_error) = create_signal(None);
	let (content, set_content) = create_signal("".to_string());
	let summary_ref: NodeRef<html::Input> = create_node_ref();
	let public_ref: NodeRef<html::Input> = create_node_ref();
	let followers_ref: NodeRef<html::Input> = create_node_ref();
	let private_ref: NodeRef<html::Input> = create_node_ref();

	// TODO is this too abusive with resources? im even checking if TLD exists...
	let mentions = create_local_resource(
		move || content.get(),
		move |c| async move {
			let mut out = Vec::new();
			for word in c.split(' ') {
				if !word.starts_with('@') { break };
				let stripped = word.replacen('@', "", 1);
				if let Some((user, domain)) = stripped.split_once('@') {
					if let Some(tld) = domain.split('.').last() {
						if tld::exist(tld) {
							if let Some(uid) = WEBFINGER.blocking_resolve(user, domain).await {
								out.push(uid);
							}
						}
					}
				}
			}
			out
		},
	);

	view! {
		<div>
			{move ||
				reply.reply_to.get().map(|r| {
					let actor_strip = post_author(&r).map(|x| view! { <ActorStrip object=x /> });
					view! {
						<span class="nowrap">
							<span 
								class="cursor emoji emoji-btn mr-s ml-s"
								on:click=move|_| reply.clear()
								title={format!("> {r} | ctx: {}", reply.context.get().unwrap_or_default())}
							>
								"✒️"
							</span>
							{actor_strip}
							<small class="tiny ml-1">"["<a class="clean" title="remove reply" href="#" on:click=move |_| reply.clear() >reply</a>"]"</small>
						</span>
					}
				})
			}
			{move ||
				mentions.get()
					.map(|x| x.into_iter().map(|u| match CACHE.get(&u) {
						Some(u) => view! { <span class="nowrap"><span class="emoji mr-s ml-s">"📨"</span><ActorStrip object=u /></span> }.into_view(),
						None => view! { <span class="nowrap"><span class="emoji mr-s ml-s">"📨"</span><a href={Uri::web(U::Actor, &u)}>{u}</a></span> }.into_view(),
					})
					.collect_view())
			}
			<table class="align w-100">
				<tr>
					<td><input type="checkbox" on:input=move |ev| advanced.set(event_target_checked(&ev)) title="toggle advanced controls" /></td>
					<td class="w-100"><input class="w-100" type="text" node_ref=summary_ref title="summary" /></td>
				</tr>
			</table>

			<textarea rows="6" class="w-100" title="content" placeholder="\n look at nothing\n  what do you see?"
				prop:value=content
				on:input=move |ev| set_content.set(event_target_value(&ev))
			></textarea>

			<table class="align rev w-100">
				<tr>
					<td><input id="priv-public" type="radio" name="privacy" value="public" title="public" node_ref=public_ref /></td>
					<td><span class="emoji" title="public" >{PRIVACY_PUBLIC}</span></td>
					<td class="w-100" rowspan="3">
						<button class="w-100" prop:disabled=posting type="button" style="height: 3em" on:click=move |_| {
							set_posting.set(true);
							spawn_local(async move {
								let summary = get_if_some(summary_ref);
								let content = content.get();
								let mut cc_vec = Vec::new();
								let mut to_vec = Vec::new();
								if get_checked(followers_ref) {
									cc_vec.push(format!("{URL_BASE}/actors/{}/followers", auth.username()));
								}
								if get_checked(public_ref) {
									cc_vec.push(apb::target::PUBLIC.to_string());
									cc_vec.push(format!("{URL_BASE}/actors/{}/followers", auth.username()));
								}
								if let Some(r) = reply.reply_to.get() {
									if let Some(au) = post_author(&r) {
										if let Ok(uid) = au.id() {
											to_vec.push(uid.to_string());
										}
									}
								}
								for mention in mentions.get().as_deref().unwrap_or(&[]) {
									to_vec.push(mention.to_string());
								}
								let payload = serde_json::Value::Object(serde_json::Map::default())
									.set_object_type(Some(apb::ObjectType::Note))
									.set_summary(summary.as_deref())
									.set_content(Some(&content))
									.set_context(apb::Node::maybe_link(reply.context.get()))
									.set_in_reply_to(apb::Node::maybe_link(reply.reply_to.get()))
									.set_to(apb::Node::links(to_vec))
									.set_cc(apb::Node::links(cc_vec));
								match Http::post(&auth.outbox(), &payload, auth).await {
									Err(e) => set_error.set(Some(e.to_string())),
									Ok(()) => {
										set_error.set(None);
										if let Some(x) = summary_ref.get() { x.set_value("") }
										set_content.set("".to_string());
									},
								}
								set_posting.set(false);
							})
						} >post</button>
					</td>
				</tr>
				<tr>
					<td><input id="priv-followers" type="radio" name="privacy" value="followers" title="followers" node_ref=followers_ref checked /></td>
					<td><span class="emoji" title="followers" >{PRIVACY_FOLLOWERS}</span></td>
				</tr>
				<tr>
					<td><input id="priv-private" type="radio" name="privacy" value="private" title="private" node_ref=private_ref /></td>
					<td><span class="emoji" title="private" >{PRIVACY_PRIVATE}</span></td>
				</tr>
			</table>
			{move|| error.get().map(|x| view! { <blockquote class="mt-s">{x}</blockquote> })}
		</div>
	}
}

#[component]
pub fn AdvancedPostBox(advanced: WriteSignal<bool>) -> impl IntoView {
	let auth = use_context::<Auth>().expect("missing auth context");
	let (posting, set_posting) = create_signal(false);
	let (error, set_error) = create_signal(None);
	let (value, set_value) = create_signal("Like".to_string());
	let (embedded, set_embedded) = create_signal(false);
	let sensitive_ref: NodeRef<html::Input> = create_node_ref();
	let summary_ref: NodeRef<html::Input> = create_node_ref();
	let content_ref: NodeRef<html::Textarea> = create_node_ref();
	let context_ref: NodeRef<html::Input> = create_node_ref();
	let name_ref: NodeRef<html::Input> = create_node_ref();
	let reply_ref: NodeRef<html::Input> = create_node_ref();
	let to_ref: NodeRef<html::Input> = create_node_ref();
	let object_id_ref: NodeRef<html::Input> = create_node_ref();
	let bto_ref: NodeRef<html::Input> = create_node_ref();
	let cc_ref: NodeRef<html::Input> = create_node_ref();
	let bcc_ref: NodeRef<html::Input> = create_node_ref();
	view! {
		<div>
							 
				<table class="align w-100">
					<tr>
						<td>
							<input type="checkbox" title="advanced" checked on:input=move |ev| {
								advanced.set(event_target_checked(&ev)) 
							}/>
						</td>
						<td class="w-100">
							<select class="w-100" on:change=move |ev| set_value.set(event_target_value(&ev))>
								<SelectOption value is="Create" />
								<SelectOption value is="Like" />
								<SelectOption value is="Follow" />
								<SelectOption value is="Announce" />
								<SelectOption value is="Accept" />
								<SelectOption value is="Reject" />
								<SelectOption value is="Undo" />
								<SelectOption value is="Delete" />
								<SelectOption value is="Update" />
							</select>
						</td>
						<td>
							<input type="checkbox" title="embedded object" on:input=move |ev| {
								set_embedded.set(event_target_checked(&ev)) 
							}/>
						</td>
					</tr>
				</table>

				<input class="w-100" type="text" node_ref=object_id_ref title="objectId" placeholder="objectId" />

				<div class:hidden=move|| !embedded.get()>
					<input class="w-100" type="text" node_ref=name_ref title="name" placeholder="name" />
					<input class="w-100" type="text" node_ref=context_ref title="context" placeholder="context" />
					<input class="w-100" type="text" node_ref=reply_ref title="inReplyTo" placeholder="inReplyTo" />

					<table class="align w-100">
						<tr>
							<td><input type="checkbox" title="sensitive" checked node_ref=sensitive_ref/>
									</td>
							<td class="w-100">
								<input class="w-100" type="text" node_ref=summary_ref title="summary" placeholder="summary" />
							</td>
						</tr>
					</table>

					<textarea rows="5" class="w-100" node_ref=content_ref title="content" placeholder="content" ></textarea>
				</div>

				<table class="w-100 align">
					<tr>
						<td class="w-66"><input class="w-100" type="text" node_ref=to_ref title="to" placeholder="to" value=apb::target::PUBLIC /></td>
						<td class="w-66"><input class="w-100" type="text" node_ref=bto_ref title="bto" placeholder="bto" /></td>
					</tr>
					<tr>
						<td class="w-33"><input class="w-100" type="text" node_ref=cc_ref title="cc" placeholder="cc" value=format!("{URL_BASE}/actors/{}/followers", auth.username()) /></td>
						<td class="w-33"><input class="w-100" type="text" node_ref=bcc_ref title="bcc" placeholder="bcc" /></td>
					</tr>
				</table>

				<button class="w-100" type="button" prop:disabled=posting on:click=move |_| {
					set_posting.set(true);
					spawn_local(async move {
						let content = content_ref.get().filter(|x| !x.value().is_empty()).map(|x| x.value());
						let summary = get_if_some(summary_ref);
						let name = get_if_some(name_ref);
						let context = get_if_some(context_ref);
						let reply = get_if_some(reply_ref);
						let object_id = get_if_some(object_id_ref);
						let to = get_vec_if_some(to_ref);
						let bto = get_vec_if_some(bto_ref);
						let cc = get_vec_if_some(cc_ref);
						let bcc = get_vec_if_some(bcc_ref);
						let payload = serde_json::Value::Object(serde_json::Map::default())
							.set_activity_type(Some(value.get().as_str().try_into().unwrap_or(apb::ActivityType::Create)))
							.set_to(apb::Node::links(to.clone()))
							.set_bto(apb::Node::links(bto.clone()))
							.set_cc(apb::Node::links(cc.clone()))
							.set_bcc(apb::Node::links(bcc.clone()))
							.set_object(
								if embedded.get() {
									apb::Node::object(
										serde_json::Value::Object(serde_json::Map::default())
											.set_id(object_id.as_deref())
											.set_object_type(Some(apb::ObjectType::Note))
											.set_name(name.as_deref())
											.set_summary(summary.as_deref())
											.set_content(content.as_deref())
											.set_in_reply_to(apb::Node::maybe_link(reply))
											.set_context(apb::Node::maybe_link(context))
											.set_to(apb::Node::links(to))
											.set_bto(apb::Node::links(bto))
											.set_cc(apb::Node::links(cc))
											.set_bcc(apb::Node::links(bcc))
									)
								} else {
									apb::Node::maybe_link(object_id)
								}
							);
						let target_url = format!("{URL_BASE}/actors/{}/outbox", auth.username());
						match Http::post(&target_url, &payload, auth).await {
							Err(e) => set_error.set(Some(e.to_string())),
							Ok(()) => set_error.set(None),
						}
						set_posting.set(false);
					})
				} >post</button>
			{move|| error.get().map(|x| view! { <blockquote class="mt-s">{x}</blockquote> })}
		</div>
	}
}

fn get_if_some(node: NodeRef<html::Input>) -> Option<String> {
	node.get()
		.map(|x| x.value())
		.filter(|x| !x.is_empty())
}

fn get_vec_if_some(node: NodeRef<html::Input>) -> Vec<String> {
	node.get()
		.map(|x| x.value())
		.filter(|x| !x.is_empty())
		.map(|x|
			x.split(',')
				.map(|x| x.to_string())
				.collect()
		).unwrap_or_default()
}

fn get_checked(node: NodeRef<html::Input>) -> bool {
	node.get()
		.map(|x| x.checked())
		.unwrap_or_default()
}

#[component]
fn SelectOption(is: &'static str, value: ReadSignal<String>) -> impl IntoView {
	view! {
		<option value=is selected=move || value.get() == is >
			{is}
		</option>
	}
}