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pasty/internal/web/web.go

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package web
import (
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"encoding/json"
"github.com/Lukaesebrot/pasty/internal/env"
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"github.com/Lukaesebrot/pasty/internal/static"
v1 "github.com/Lukaesebrot/pasty/internal/web/controllers/v1"
routing "github.com/fasthttp/router"
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"github.com/ulule/limiter/v3"
limitFasthttp "github.com/ulule/limiter/v3/drivers/middleware/fasthttp"
"github.com/ulule/limiter/v3/drivers/store/memory"
"github.com/valyala/fasthttp"
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"path/filepath"
"strings"
)
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// Serve serves the web resources
func Serve() error {
// Create the router
router := routing.New()
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// Define the 404 handler
router.NotFound = func(ctx *fasthttp.RequestCtx) {
ctx.SetStatusCode(fasthttp.StatusNotFound)
ctx.SetBodyString("not found")
}
// Route the frontend requests
frontend := frontendHandler()
router.GET("/{path:*}", func(ctx *fasthttp.RequestCtx) {
path := string(ctx.Path())
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if !strings.HasPrefix(path, "/api") && (strings.Count(path, "/") == 1 || strings.HasPrefix(path, "/assets")) {
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frontend(ctx)
return
}
router.NotFound(ctx)
})
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// Set up the rate limiter
rate, err := limiter.NewRateFromFormatted(env.Get("RATE_LIMIT", "30-M"))
if err != nil {
return err
}
rateLimiter := limiter.New(memory.NewStore(), rate)
rateLimiterMiddleware := limitFasthttp.NewMiddleware(rateLimiter)
// Route the API endpoints
apiRoute := router.Group("/api")
{
v1Route := apiRoute.Group("/v1")
{
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v1Route.GET("/info", func(ctx *fasthttp.RequestCtx) {
jsonData, _ := json.Marshal(map[string]string{
"version": static.Version,
})
ctx.SetBody(jsonData)
})
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v1.InitializePastesController(v1Route.Group("/pastes"), rateLimiterMiddleware)
}
}
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// Route the hastebin documents route if hastebin support is enabled
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if env.Bool("HASTEBIN_SUPPORT", false) {
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router.POST("/documents", rateLimiterMiddleware.Handle(v1.HastebinSupportHandler))
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}
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// Serve the web resources
address := env.Get("WEB_ADDRESS", ":8080")
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return (&fasthttp.Server{
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Handler: func(ctx *fasthttp.RequestCtx) {
// Add the CORS headers
ctx.Response.Header.Set("Access-Control-Allow-Methods", "GET,POST,DELETE,OPTIONS")
ctx.Response.Header.Set("Access-Control-Allow-Origin", "*")
// Call the router handler
router.Handler(ctx)
},
Logger: new(nilLogger),
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}).ListenAndServe(address)
}
// frontendHandler handles the frontend routing
func frontendHandler() fasthttp.RequestHandler {
// Create the file server
fs := &fasthttp.FS{
Root: "./web",
IndexNames: []string{"index.html"},
CacheDuration: 0,
}
fs.PathNotFound = func(ctx *fasthttp.RequestCtx) {
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if strings.HasPrefix(string(ctx.Path()), "/assets") {
ctx.SetStatusCode(fasthttp.StatusNotFound)
ctx.SetBodyString("not found")
return
}
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ctx.SendFile(filepath.Join(fs.Root, "index.html"))
}
return fs.NewRequestHandler()
}