implement /logout endpoint

src/cookies.zig

@@ -22,3 +22,7 @@ pub fn parse(alloc: std.mem.Allocator, headers: http.Request.Headers) !Jar {
     }
     return map;
 }
+
+pub fn delete(response: *http.Response, comptime name: string) !void {
+    try response.headers.put("Set-Cookie", name ++ "=; path=/; expires=Thu, 01 Jan 1970 00:00:00 GMT");
+}

src/handler/_handler.zig

@@ -8,6 +8,7 @@ const json = @import("json");
 
 const mime = @import("../mime.zig");
 const db = @import("../db/_db.zig");
+const cookies = @import("../cookies.zig");
 
 const _internal = @import("./_internal.zig");
 const _index = @import("./index.zig");
@@ -31,6 +32,7 @@ pub fn getHandler(comptime oa2: type) http.RequestHandler(void) {
     return http.router.Router(void, &.{
         http.router.get("/", Middleware(_index.get).next),
         file_route("/theme.css"),
+        http.router.get("/logout", Middleware(logout).next),
         http.router.get("/about", Middleware(StaticPek("/about.pek", "About").get).next),
         http.router.get("/contact", Middleware(StaticPek("/contact.pek", "Contact").get).next),
         http.router.get("/login", Middleware(oa2.login).next),
@@ -118,3 +120,12 @@ pub fn saveInfo(response: *http.Response, request: http.Request, idp: oauth2.Pro
 pub fn getAccessToken(ulid: string) ?string {
     return _internal.access_tokens.get(ulid);
 }
+
+pub fn logout(_: void, response: *http.Response, request: http.Request, args: struct {}) !void {
+    _ = args;
+    _ = response;
+    _ = request;
+
+    try cookies.delete(response, "jwt");
+    try _internal.redirectTo(response, "./");
+}