270 lines
10 KiB
TypeScript
270 lines
10 KiB
TypeScript
import React from "react";
|
|
|
|
type Meta = {title:string, description:string, keywords:string, image:string, canonical:string }
|
|
type MetaKeys = keyof Meta;
|
|
export const Meta:Meta = {
|
|
title:"",
|
|
description:"",
|
|
keywords:"",
|
|
image:"",
|
|
canonical:""
|
|
};
|
|
|
|
type MetasInputs = { [Property in MetaKeys]?: string };
|
|
export const Metas =(props:{concatListed?:boolean; dropUnlisted?:boolean}&MetasInputs):null=>
|
|
{
|
|
const additive = props.concatListed ? (key:MetaKeys, value:string)=> Meta[key] += value : (key:MetaKeys, value:string)=> Meta[key] = value;
|
|
const subtractive = props.dropUnlisted ? (key:MetaKeys)=> Meta[key] = "" : (key:MetaKeys)=> {};
|
|
|
|
Object.keys(Meta).forEach((key)=>{
|
|
const metaKey = key as MetaKeys;
|
|
const propValue = props[metaKey]||"";
|
|
propValue ? additive(metaKey, propValue) : subtractive(metaKey);
|
|
})
|
|
if(window.innerWidth)
|
|
{
|
|
document.title = Meta.title;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
|
|
export type Children = string | number | React.JSX.Element | React.JSX.Element[];
|
|
|
|
type RoutePath = Array<string>;
|
|
type RouteParams = Record<string, string|number|boolean>;
|
|
type RouteState = {URL:URL, Path:RoutePath, Params:RouteParams, Anchor:string};
|
|
type RouteContext = [Route:RouteState, Update:(inPath?:RoutePath, inParams?:RouteParams, inAnchor?:string)=>void];
|
|
type RouteProps = {children:Children, url?:URL };
|
|
export const Router = {
|
|
Parse(url:URL):RouteState
|
|
{
|
|
const Path = url.pathname.substring(1, url.pathname.endsWith("/") ? url.pathname.length-1 : url.pathname.length).split("/");
|
|
const Params:RouteParams = {};
|
|
new URLSearchParams(url.search).forEach((k, v)=> Params[k] = v);
|
|
const Anchor = url.hash.substring(1);
|
|
return {URL:url, Path, Params, Anchor} as RouteState;
|
|
},
|
|
Context:React.createContext([{URL:new URL("https://original.route/"), Path:[], Params:{}, Anchor:""}, ()=>{}] as RouteContext),
|
|
Provider(props:RouteProps)
|
|
{
|
|
const [routeGet, routeSet] = React.useState(Router.Parse(props.url || new URL(document.location.href)));
|
|
const [dirtyGet, dirtySet] = React.useState(true);
|
|
|
|
const routeUpdate:RouteContext[1] =(inPath, inParams, inAnchor)=>
|
|
{
|
|
const clone = new URL(routeGet.URL);
|
|
inPath && (clone.pathname = inPath.join("/"));
|
|
inParams && (clone.search = new URLSearchParams(inParams as Record<string, string>).toString());
|
|
routeSet({
|
|
URL:clone,
|
|
Path: inPath || routeGet.Path,
|
|
Params: inParams || routeGet.Params,
|
|
Anchor: inAnchor || routeGet.Anchor
|
|
});
|
|
};
|
|
|
|
// when the state changes, update the page url
|
|
React.useEffect(()=> dirtyGet ? dirtySet(false) : history.pushState({...routeGet, URL:undefined}, "", routeGet.URL), [routeGet.URL.href]);
|
|
|
|
React.useEffect(()=>{
|
|
history.replaceState({...routeGet, URL:undefined}, "", routeGet.URL);
|
|
window.addEventListener("popstate", ({state})=>
|
|
{
|
|
dirtySet(true);
|
|
routeUpdate(state.Path, state.Params, state.Anchor);
|
|
});
|
|
document.addEventListener("click", e=>
|
|
{
|
|
const t = e.target as HTMLAnchorElement;
|
|
if(t.href)
|
|
{
|
|
const u = new URL(t.href);
|
|
if(u.origin == document.location.origin)
|
|
{
|
|
e.preventDefault();
|
|
const parts = Router.Parse(u);
|
|
routeUpdate(parts.Path, parts.Params, parts.Anchor);
|
|
}
|
|
}
|
|
})
|
|
}, []);
|
|
|
|
return <Router.Context.Provider value={[routeGet, routeUpdate]}>{props.children}</Router.Context.Provider>;
|
|
},
|
|
Consumer()
|
|
{
|
|
return React.useContext(Router.Context);
|
|
}
|
|
};
|
|
|
|
type SwitchContext = {depth:number, keys:Record<string, string>};
|
|
export const SwitchContext = React.createContext({depth:0, keys:{}} as SwitchContext);
|
|
export const Switch =({children}:{children:Children})=>
|
|
{
|
|
let fallback = null;
|
|
if(Array.isArray(children))
|
|
{
|
|
const contextSelection = React.useContext(SwitchContext);
|
|
const [contextRoute] = Router.Consumer();
|
|
const routeSegment = contextRoute.Path.slice(contextSelection.depth);
|
|
const checkChild =(inChild:{props:{value?:string}})=>
|
|
{
|
|
if(inChild?.props?.value)
|
|
{
|
|
const parts = inChild.props.value.split("/");
|
|
if(parts.length > routeSegment.length)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
const output:SwitchContext = {depth:contextSelection.depth+parts.length, keys:{}};
|
|
for(let i=0; i<parts.length; i++)
|
|
{
|
|
const partRoute = routeSegment[i];
|
|
const partCase = parts[i];
|
|
if(partCase[0] == ":")
|
|
{
|
|
output.keys[partCase.substring(1)] = partRoute;
|
|
}
|
|
else if(partCase != "*" && partCase != partRoute)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
return output;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
for(let i=0; i<children.length; i++)
|
|
{
|
|
const childCase = children[i];
|
|
const childCaseChildren = childCase.props?.__args?.[2] || childCase.props.children;
|
|
const newContextValue = checkChild(childCase);
|
|
if(newContextValue)
|
|
{
|
|
return <SwitchContext.Provider value={newContextValue}>{childCaseChildren}</SwitchContext.Provider>
|
|
}
|
|
if(childCase?.props?.default && !fallback)
|
|
{
|
|
console.log(routeSegment);
|
|
fallback = childCaseChildren;
|
|
}
|
|
}
|
|
}
|
|
|
|
return fallback;
|
|
};
|
|
export const Case =({children, value}:{children:Children, value?:string, default?:true})=>null;
|
|
export const useRouteVars =()=> React.useContext(SwitchContext).keys;
|
|
|
|
export type FetchCachOptions = {CacheFor:number, CacheOnServer:boolean, DelaySSR:boolean, Seed:boolean};
|
|
export type FetchRecord = {URL:string, Promise?:Promise<FetchRecord>, CachedAt:number, Error?:string, JSON?:object} & FetchCachOptions;
|
|
type FetchGuide = [Record:FetchRecord, Init:boolean, Listen:boolean];
|
|
export type FetchHookState = [Data:undefined|object, Updating:boolean];
|
|
export const Fetch = {
|
|
Cache:new Map() as Map<string, FetchRecord>,
|
|
ServerBlocking:false as false|Promise<FetchRecord>[],
|
|
ServerTouched:false as false|Set<FetchRecord>,
|
|
ServerRemove:false as false|Set<FetchRecord>,
|
|
Seed(seed:FetchRecord[])
|
|
{
|
|
seed.forEach(r=>{
|
|
//r.Promise = Promise.resolve(r);
|
|
Fetch.Cache.set(r.URL, r)
|
|
});
|
|
},
|
|
DefaultOptions:{CacheFor:60, CacheOnServer:true, DelaySSR:true, Seed:true} as FetchCachOptions,
|
|
Request(URL:string, Init?:RequestInit|null, CacheFor:number = 60, CacheOnServer:boolean = true, DelaySSR:boolean = true, Seed:boolean = true):FetchGuide
|
|
{
|
|
let check = Fetch.Cache.get(URL);
|
|
|
|
const load =(inCheck:FetchRecord)=>
|
|
{
|
|
Fetch.Cache.set(URL, inCheck);
|
|
inCheck.CachedAt = 0;
|
|
inCheck.Promise = fetch(URL, Init?Init:undefined).then(resp=>resp.json()).then((json)=>{
|
|
inCheck.JSON = json;
|
|
inCheck.CachedAt = new Date().getTime();
|
|
console.log(`...cached!`);
|
|
return inCheck;
|
|
});
|
|
return inCheck;
|
|
};
|
|
|
|
if(!check)
|
|
{
|
|
// not in the cache
|
|
// - listen
|
|
|
|
console.log(`making new cache record...`);
|
|
return [load({URL, CacheFor, CachedAt:0, CacheOnServer, DelaySSR, Seed}), false, true];
|
|
}
|
|
else if(check.CachedAt == 0)
|
|
{
|
|
// loading started but not finished
|
|
// - listen
|
|
// - possibly init if there is something in JSON
|
|
|
|
console.log(`currently being cached...`);
|
|
return [check, check.JSON ? true : false, true];
|
|
}
|
|
else
|
|
{
|
|
console.log(`found in cache...`);
|
|
let secondsAge = (new Date().getTime() - check.CachedAt)/1000;
|
|
if(secondsAge > check.CacheFor)
|
|
{
|
|
// cached but expired
|
|
// - listen
|
|
// - init
|
|
console.log(`...outdated...`);
|
|
return [load(check), true, true];
|
|
}
|
|
else
|
|
{
|
|
// cached and ready
|
|
// - init
|
|
console.log(`...retrieved!`);
|
|
return [check, true, false];
|
|
}
|
|
|
|
}
|
|
},
|
|
|
|
Use(URL:string, Init?:RequestInit|null, Options?:FetchCachOptions)
|
|
{
|
|
const config = {...Fetch.DefaultOptions, ...Options};
|
|
const [receipt, init, listen] = Fetch.Request(URL, Init, config.CacheFor, config.CacheOnServer, config.DelaySSR, config.Seed);
|
|
const initialState:FetchHookState = init ? [receipt.JSON, listen] : [undefined, true];
|
|
const [cacheGet, cacheSet] = React.useState(initialState);
|
|
|
|
if(Fetch.ServerBlocking && Fetch.ServerTouched && config.DelaySSR) // if server-side rendering
|
|
{
|
|
if(listen) // if the request is pending
|
|
{
|
|
receipt.Promise && Fetch.ServerBlocking.push(receipt.Promise); // add promise to blocking list
|
|
return [undefined, listen] as FetchHookState; // no need to return any actual data while waiting server-side
|
|
}
|
|
else // if request is ready
|
|
{
|
|
receipt.Seed && Fetch.ServerTouched.add(receipt); // add record to client seed list (if specified in receipt.seed)
|
|
return [receipt.JSON, false] as FetchHookState;
|
|
}
|
|
}
|
|
|
|
React.useEffect(()=>
|
|
{
|
|
if(listen)
|
|
{
|
|
//const receipt = Fetch.Request(URL, Init, CacheFor, CacheOnServer, DelaySSR);
|
|
receipt.Promise?.then(()=>cacheSet([receipt.JSON, receipt.CachedAt === 0]));
|
|
}
|
|
}
|
|
, []);
|
|
|
|
return cacheGet;
|
|
}
|
|
}; |