package localapi

import (
	"net/http"
	"time"
)

// LineTestReader is the R-1247 weekly upload line test (internal/linetest.Tester) as the local API reads it.
type LineTestReader interface {
	Value() (mbps float64, at time.Time, ok bool)
}

// LineTestResponse is GET /host/line-test. Present=false: never measured, or the job is not wired (no tunnel, disabled,
// or an agent before the route answers 404 — the controller reads all three as „unknown").
type LineTestResponse struct {
	Present    bool    `json:"present"`
	Mbps       float64 `json:"mbps,omitempty"`
	MeasuredAt string  `json:"measured_at,omitempty"` // RFC3339 UTC
	Method     string  `json:"method,omitempty"`      // "iperf3-tunnel": a 10-second upload to ep0 inside the tunnel
}

// SetLineTest wires the weekly line test (main.go builds it after the local API server).
func (s *Server) SetLineTest(r LineTestReader) { s.lineTest = r }

func (s *Server) handleLineTest(w http.ResponseWriter, r *http.Request, vmid int) {
	if s.lineTest == nil {
		writeOK(w, LineTestResponse{Present: false})
		return
	}
	mbps, at, ok := s.lineTest.Value()
	if !ok {
		writeOK(w, LineTestResponse{Present: false})
		return
	}
	s.logger.Debug("local-api: /host/line-test served", "vmid", vmid, "mbps", mbps, "measured_at", at.UTC().Format(time.RFC3339))
	writeOK(w, LineTestResponse{Present: true, Mbps: mbps, MeasuredAt: at.UTC().Format(time.RFC3339), Method: "iperf3-tunnel"})
}