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import {RouteParams, Route} from './types'
export class Router {
routes: [string, Route][] = []
constructor(description: Record<string, string>) {
for (const [screen, pattern] of Object.entries(description)) {
this.routes.push([screen, createRoute(pattern)])
}
}
matchName(name: string): Route | undefined {
for (const [screenName, route] of this.routes) {
if (screenName === name) {
return route
}
}
}
matchPath(path: string): [string, RouteParams] {
let name = 'NotFound'
let params: RouteParams = {}
for (const [screenName, route] of this.routes) {
const res = route.match(path)
if (res) {
name = screenName
params = res.params
break
}
}
return [name, params]
}
}
function createRoute(pattern: string): Route {
let matcherReInternal = pattern.replace(
/:([\w]+)/g,
(_m, name) => `(?<${name}>[^/]+)`,
)
const matcherRe = new RegExp(`^${matcherReInternal}([?]|$)`, 'i')
return {
match(path: string) {
const res = matcherRe.exec(path)
if (res) {
return {params: res.groups || {}}
}
return undefined
},
build(params: Record<string, string>) {
return pattern.replace(
/:([\w]+)/g,
(_m, name) => params[name] || 'undefined',
)
},
}
}
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