an http based roguelike rpg about jelqing
| 1 | use axum::http::{HeaderName, StatusCode, header}; |
| 2 | use serde_json::{Value, json}; |
| 3 | |
| 4 | use crate::link::{self, Link}; |
| 5 | |
| 6 | pub enum Payload { |
| 7 | Empty, |
| 8 | Json(Value), |
| 9 | Raw(&'static str, Vec<u8>), |
| 10 | } |
| 11 | |
| 12 | /// One way out of a 300, offered in the body and in `Link` alike. |
| 13 | pub struct Choice { |
| 14 | pub(crate) href: String, |
| 15 | pub(crate) method: &'static str, |
| 16 | pub(crate) title: &'static str, |
| 17 | } |
| 18 | |
| 19 | /// A successful result of a game action, before it becomes an HTTP response. |
| 20 | pub struct Outcome { |
| 21 | status: StatusCode, |
| 22 | payload: Payload, |
| 23 | headers: Vec<(HeaderName, String)>, |
| 24 | } |
| 25 | |
| 26 | impl Outcome { |
| 27 | pub fn empty(status: StatusCode) -> Self { |
| 28 | Self { |
| 29 | status, |
| 30 | payload: Payload::Empty, |
| 31 | headers: Vec::new(), |
| 32 | } |
| 33 | } |
| 34 | |
| 35 | pub fn json(status: StatusCode, body: Value) -> Self { |
| 36 | Self { |
| 37 | payload: Payload::Json(body), |
| 38 | ..Self::empty(status) |
| 39 | } |
| 40 | } |
| 41 | |
| 42 | pub fn raw(status: StatusCode, content_type: &'static str, body: impl Into<Vec<u8>>) -> Self { |
| 43 | Self { |
| 44 | payload: Payload::Raw(content_type, body.into()), |
| 45 | ..Self::empty(status) |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | pub fn choices(detail: &str, choices: &[Choice]) -> Self { |
| 50 | let listed: Vec<Value> = choices |
| 51 | .iter() |
| 52 | .map(|c| json!({ "href": c.href, "method": c.method, "title": c.title })) |
| 53 | .collect(); |
| 54 | let links = link::join(choices.iter().map(|c| { |
| 55 | Link::registered(&c.href, "alternate") |
| 56 | .title(c.title) |
| 57 | .allow(c.method) |
| 58 | })); |
| 59 | Self::json( |
| 60 | StatusCode::MULTIPLE_CHOICES, |
| 61 | json!({ "detail": detail, "choices": listed }), |
| 62 | ) |
| 63 | .header(header::LINK, links) |
| 64 | } |
| 65 | |
| 66 | pub fn header(mut self, name: HeaderName, value: impl Into<String>) -> Self { |
| 67 | self.headers.push((name, value.into())); |
| 68 | self |
| 69 | } |
| 70 | |
| 71 | pub fn status(&self) -> StatusCode { |
| 72 | self.status |
| 73 | } |
| 74 | |
| 75 | pub fn body(&self) -> Option<&Value> { |
| 76 | match &self.payload { |
| 77 | Payload::Json(body) => Some(body), |
| 78 | _ => None, |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | pub fn header_value(&self, name: &HeaderName) -> Option<&str> { |
| 83 | self.headers |
| 84 | .iter() |
| 85 | .find(|(n, _)| n == name) |
| 86 | .map(|(_, v)| v.as_str()) |
| 87 | } |
| 88 | |
| 89 | pub(super) fn retold(mut self, status: StatusCode, detail: &str) -> Self { |
| 90 | self.status = status; |
| 91 | if let Payload::Json(body) = &mut self.payload { |
| 92 | body["detail"] = Value::from(detail); |
| 93 | } |
| 94 | self |
| 95 | } |
| 96 | |
| 97 | pub fn into_parts(self) -> (StatusCode, Payload, Vec<(HeaderName, String)>) { |
| 98 | (self.status, self.payload, self.headers) |
| 99 | } |
| 100 | } |