#[derive(Debug)]
pub enum PostError{
	Reqwest(reqwest::Error),
	CSRF,
}
impl std::fmt::Display for PostError{
	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
		write!(f,"{self:?}")
	}
}
impl std::error::Error for PostError{}

#[derive(Debug,serde::Deserialize,serde::Serialize)]
#[allow(nonstandard_style,dead_code)]
pub struct CreateRequest{
	pub name:String,
	pub description:String,
	pub ispublic:bool,
	pub allowComments:bool,
	pub groupId:Option<u64>,
}
#[derive(Debug)]
pub enum CreateError{
	ParseError(url::ParseError),
	PostError(PostError),
	Reqwest(reqwest::Error),
}
impl std::fmt::Display for CreateError{
	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
		write!(f,"{self:?}")
	}
}
impl std::error::Error for CreateError{}

#[allow(nonstandard_style,dead_code)]
pub struct UploadRequest{
	pub assetid:u64,
	pub name:Option<String>,
	pub description:Option<String>,
	pub ispublic:Option<bool>,
	pub allowComments:Option<bool>,
	pub groupId:Option<u64>,
}
#[derive(Debug)]
pub enum UploadError{
	ParseError(url::ParseError),
	PostError(PostError),
	Reqwest(reqwest::Error),
	AssetIdIsZero,
}
impl std::fmt::Display for UploadError{
	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
		write!(f,"{self:?}")
	}
}
impl std::error::Error for UploadError{}
#[derive(Debug,serde::Deserialize,serde::Serialize)]
#[allow(nonstandard_style,dead_code)]
pub struct UploadResponse{
	pub AssetId:u64,
	pub AssetVersionId:u64,
}

#[allow(nonstandard_style,dead_code)]
pub struct GetAssetRequest{
	pub asset_id:u64,
	pub version:Option<u64>,
}
#[derive(Debug)]
pub enum GetError{
	ParseError(url::ParseError),
	Reqwest(reqwest::Error),
	IO(std::io::Error)
}
impl std::fmt::Display for GetError{
	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
		write!(f,"{self:?}")
	}
}
impl std::error::Error for GetError{}

pub struct AssetVersionsPageRequest{
	pub asset_id:u64,
	pub cursor:Option<String>,
}
#[derive(serde::Deserialize,serde::Serialize)]
#[allow(nonstandard_style,dead_code)]
pub struct AssetVersion{
	pub Id:u64,
	pub assetId:u64,
	pub assetVersionNumber:u64,
	pub creatorType:String,
	pub creatorTargetId:u64,
	pub creatingUniverseId:Option<u64>,
	pub created:chrono::DateTime<chrono::Utc>,
	pub isPublished:bool,
}
#[derive(serde::Deserialize)]
#[allow(nonstandard_style,dead_code)]
pub struct AssetVersionsPageResponse{
	pub previousPageCursor:Option<String>,
	pub nextPageCursor:Option<String>,
	pub data:Vec<AssetVersion>,
}
#[derive(Debug)]
pub enum AssetVersionsPageError{
	ParseError(url::ParseError),
	Reqwest(reqwest::Error),
}
impl std::fmt::Display for AssetVersionsPageError{
	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
		write!(f,"{self:?}")
	}
}
impl std::error::Error for AssetVersionsPageError{}

pub struct InventoryPageRequest{
	pub group:u64,
	pub cursor:Option<String>,
}
#[derive(serde::Deserialize,serde::Serialize)]
#[allow(nonstandard_style,dead_code)]
pub struct InventoryItem{
	pub id:u64,
	pub name:String,
}
#[derive(serde::Deserialize,serde::Serialize)]
#[allow(nonstandard_style,dead_code)]
pub struct InventoryPageResponse{
	pub totalResults:u64,//up to 50
	pub filteredKeyword:Option<String>,//""
	pub searchDebugInfo:Option<String>,//null
	pub spellCheckerResult:Option<String>,//null
	pub queryFacets:Option<String>,//null
	pub imageSearchStatus:Option<String>,//null
	pub previousPageCursor:Option<String>,
	pub nextPageCursor:Option<String>,
	pub data:Vec<InventoryItem>,
}
#[derive(Debug)]
pub enum InventoryPageError{
	ParseError(url::ParseError),
	Reqwest(reqwest::Error),
}
impl std::fmt::Display for InventoryPageError{
	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
		write!(f,"{self:?}")
	}
}
impl std::error::Error for InventoryPageError{}

//idk how to do this better
enum ReaderType<R:std::io::Read>{
	GZip(flate2::read::GzDecoder<std::io::BufReader<R>>),
	Raw(std::io::BufReader<R>),
}
fn maybe_gzip_decode<R:std::io::Read>(input:R)->std::io::Result<ReaderType<R>>{
	let mut buf=std::io::BufReader::new(input);
	let peek=std::io::BufRead::fill_buf(&mut buf)?;
	match &peek[0..2]{
		b"\x1f\x8b"=>Ok(ReaderType::GZip(flate2::read::GzDecoder::new(buf))),
		_=>Ok(ReaderType::Raw(buf)),
	}
}
fn read_readable(mut readable:impl std::io::Read)->std::io::Result<Vec<u8>>{
	let mut contents=Vec::new();
	readable.read_to_end(&mut contents)?;
	Ok(contents)
}

#[derive(Clone)]
pub struct Cookie(String);
impl Cookie{
	pub fn new(cookie:String)->Self{
		Self(cookie)
	}
	pub fn get(self)->String{
		self.0
	}
}
#[derive(Clone)]
pub struct CookieContext{
	pub cookie:String,
	pub client:reqwest::Client,
}

impl CookieContext{
	pub fn new(cookie:Cookie)->Self{
		Self{
			cookie:cookie.get(),
			client:reqwest::Client::new(),
		}
	}
	async fn get(&self,url:impl reqwest::IntoUrl)->Result<reqwest::Response,reqwest::Error>{
		self.client.get(url)
		.header("Cookie",self.cookie.as_str())
		.send().await
	}
	async fn post(&self,url:url::Url,body:impl Into<reqwest::Body>+Clone)->Result<reqwest::Response,PostError>{
		let mut resp=self.client.post(url.clone())
		.header("Cookie",self.cookie.as_str())
		.body(body.clone())
		.send().await.map_err(PostError::Reqwest)?;

		//This is called a CSRF challenge apparently
		if resp.status()==reqwest::StatusCode::FORBIDDEN{
			if let Some(csrf_token)=resp.headers().get("X-CSRF-Token"){
				resp=self.client.post(url)
				.header("X-CSRF-Token",csrf_token)
				.header("Cookie",self.cookie.as_str())
				.body(body)
				.send().await.map_err(PostError::Reqwest)?;
			}else{
				Err(PostError::CSRF)?;
			}
		}

		Ok(resp)
	}
	pub async fn create(&self,config:CreateRequest,body:impl Into<reqwest::Body>+Clone)->Result<UploadResponse,CreateError>{
		let mut url=reqwest::Url::parse("https://data.roblox.com/Data/Upload.ashx?json=1&type=Model&genreTypeId=1").map_err(CreateError::ParseError)?;
		//url borrow scope
		{
			let mut query=url.query_pairs_mut();//borrow here
			//archaic roblox api uses 0 for new asset
			query.append_pair("assetid","0");
			query.append_pair("name",config.name.as_str());
			query.append_pair("description",config.description.as_str());
			query.append_pair("ispublic",if config.ispublic{"True"}else{"False"});
			query.append_pair("allowComments",if config.allowComments{"True"}else{"False"});
			match config.groupId{
				Some(group_id)=>{query.append_pair("groupId",group_id.to_string().as_str());},
				None=>(),
			}
		}

		let resp=self.post(url,body).await.map_err(CreateError::PostError)?;

		Ok(resp.json::<UploadResponse>().await.map_err(CreateError::Reqwest)?)
	}
	pub async fn upload(&self,config:UploadRequest,body:impl Into<reqwest::Body>+Clone)->Result<UploadResponse,UploadError>{
		let mut url=reqwest::Url::parse("https://data.roblox.com/Data/Upload.ashx?json=1&type=Model&genreTypeId=1").map_err(UploadError::ParseError)?;
		//url borrow scope
		{
			let mut query=url.query_pairs_mut();//borrow here
			//archaic roblox api uses 0 for new asset
			match config.assetid{
				0=>return Err(UploadError::AssetIdIsZero),
				assetid=>{query.append_pair("assetid",assetid.to_string().as_str());},
			}
			if let Some(name)=config.name.as_deref(){
				query.append_pair("name",name);
			}
			if let Some(description)=config.description.as_deref(){
				query.append_pair("description",description);
			}
			if let Some(ispublic)=config.ispublic{
				query.append_pair("ispublic",if ispublic{"True"}else{"False"});
			}
			if let Some(allow_comments)=config.allowComments{
				query.append_pair("allowComments",if allow_comments{"True"}else{"False"});
			}
			if let Some(group_id)=config.groupId{
				query.append_pair("groupId",group_id.to_string().as_str());
			}
		}

		let resp=self.post(url,body).await.map_err(UploadError::PostError)?;

		Ok(resp.json::<UploadResponse>().await.map_err(UploadError::Reqwest)?)
	}
	pub async fn get_asset(&self,config:GetAssetRequest)->Result<Vec<u8>,GetError>{
		let mut url=reqwest::Url::parse("https://assetdelivery.roblox.com/v1/asset/").map_err(GetError::ParseError)?;
		//url borrow scope
		{
			let mut query=url.query_pairs_mut();//borrow here
			query.append_pair("ID",config.asset_id.to_string().as_str());
			if let Some(version)=config.version{
				query.append_pair("version",version.to_string().as_str());
			}
		}
		let resp=self.get(url).await.map_err(GetError::Reqwest)?;

		let body=resp.bytes().await.map_err(GetError::Reqwest)?;

		match maybe_gzip_decode(&mut std::io::Cursor::new(body)){
			Ok(ReaderType::GZip(readable))=>read_readable(readable),
			Ok(ReaderType::Raw(readable))=>read_readable(readable),
			Err(e)=>Err(e),
		}.map_err(GetError::IO)
	}
	pub async fn get_asset_versions_page(&self,config:AssetVersionsPageRequest)->Result<AssetVersionsPageResponse,AssetVersionsPageError>{
		let mut url=reqwest::Url::parse(format!("https://develop.roblox.com/v1/assets/{}/saved-versions",config.asset_id).as_str()).map_err(AssetVersionsPageError::ParseError)?;
		//url borrow scope
		{
			let mut query=url.query_pairs_mut();//borrow here
			//query.append_pair("sortOrder","Asc");
			//query.append_pair("limit","100");
			//query.append_pair("count","100");
			if let Some(cursor)=config.cursor.as_deref(){
				query.append_pair("cursor",cursor);
			}
		}

		Ok(self.get(url).await.map_err(AssetVersionsPageError::Reqwest)?
		.json::<AssetVersionsPageResponse>().await.map_err(AssetVersionsPageError::Reqwest)?)
	}
	pub async fn get_inventory_page(&self,config:InventoryPageRequest)->Result<InventoryPageResponse,InventoryPageError>{
		let mut url=reqwest::Url::parse(format!("https://apis.roblox.com/toolbox-service/v1/creations/group/{}/10?limit=50",config.group).as_str()).map_err(InventoryPageError::ParseError)?;
		//url borrow scope
		{
			let mut query=url.query_pairs_mut();//borrow here
			if let Some(cursor)=config.cursor.as_deref(){
				query.append_pair("cursor",cursor);
			}
		}

		Ok(self.get(url).await.map_err(InventoryPageError::Reqwest)?
		.json::<InventoryPageResponse>().await.map_err(InventoryPageError::Reqwest)?)
	}
}