feat: proxmox idlewatcher (#88)

* feat: idle sleep for proxmox LXCs

* refactor: replace deprecated docker api types

* chore(api): remove debug task list endpoint

* refactor: move servemux to gphttp/servemux; favicon.go to v1/favicon

* refactor: introduce Pool interface, move agent_pool to agent module

* refactor: simplify api code

* feat: introduce debug api

* refactor: remove net.URL and net.CIDR types, improved unmarshal handling

* chore: update Makefile for debug build tag, update README

* chore: add gperr.Unwrap method

* feat: relative time and duration formatting

* chore: add ROOT_DIR environment variable, refactor

* migration: move homepage override and icon cache to $BASE_DIR/data, add migration code

* fix: nil dereference on marshalling service health

* fix: wait for route deletion

* chore: enhance tasks debuggability

* feat: stdout access logger and MultiWriter

* fix(agent): remove agent properly on verify error

* fix(metrics): disk exclusion logic and added corresponding tests

* chore: update schema and prettify, fix package.json and Makefile

* fix: I/O buffer not being shrunk before putting back to pool

* feat: enhanced error handling module

* chore: deps upgrade

* feat: better value formatting and handling

---------

Co-authored-by: yusing <yusing@6uo.me>

internal/net/gphttp/gpwebsocket/utils.go

@@ -6,6 +6,7 @@ import (
 	"time"
 
 	"github.com/coder/websocket"
+	"github.com/coder/websocket/wsjson"
 	"github.com/yusing/go-proxy/internal/common"
 	"github.com/yusing/go-proxy/internal/gperr"
 	"github.com/yusing/go-proxy/internal/logging"
@@ -84,3 +85,18 @@ func WriteText(r *http.Request, conn *websocket.Conn, msg string) bool {
 	}
 	return true
 }
+
+// DynamicJSONHandler serves a JSON response depending on the request type.
+//
+// If the request is a websocket, it serves the data for the given interval.
+//
+// Otherwise, it serves the data once.
+func DynamicJSONHandler[ResultType any](w http.ResponseWriter, r *http.Request, getter func() ResultType, interval time.Duration) {
+	if httpheaders.IsWebsocket(r.Header) {
+		Periodic(w, r, interval, func(conn *websocket.Conn) error {
+			return wsjson.Write(r.Context(), conn, getter())
+		})
+	} else {
+		gphttp.RespondJSON(w, r, getter())
+	}
+}