package api

import (
	"net/http"
	"strconv"

	"crypto-miner-server/internal/db"
)

const (
	dashboardInitDefaultLimit = 100
	dashboardInitMaxLimit     = 2000
)

// parseDashboardInitFilter reads optional init_limit / init_offset on /ws/dashboard.
func parseDashboardInitFilter(r *http.Request) (db.AgentListFilter, bool) {
	limitStr := r.URL.Query().Get("init_limit")
	if limitStr == "" {
		return db.AgentListFilter{}, false
	}
	limit, err := strconv.Atoi(limitStr)
	if err != nil || limit <= 0 {
		limit = dashboardInitDefaultLimit
	}
	if limit > dashboardInitMaxLimit {
		limit = dashboardInitMaxLimit
	}
	offset := 0
	if offStr := r.URL.Query().Get("init_offset"); offStr != "" {
		if o, err := strconv.Atoi(offStr); err == nil && o >= 0 {
			offset = o
		}
	}
	return db.AgentListFilter{Limit: limit, Offset: offset}, true
}