package handlers

import (
	"net/http"

	breadtypes "github.com/oy/openyield/x/bread/types"
	stashtypes "github.com/oy/openyield/x/stash/types"
)

// registerStash wires the Stash dashboard route (REQ-041) into the mux.
func (s *Server) registerStash(mux *http.ServeMux) {
	mux.HandleFunc("GET /stash/{holderID}", s.handleStashDashboard)
}

// stashViewData is the template data for the Stash dashboard. It carries the
// real x/*/types structs plus the Bread-scale conversion (computed from the
// x/bread/types code constants per D-073) and the maturity progress.
type stashViewData struct {
	Stash         stashtypes.Stash
	Activity      stashtypes.StashActivity
	Found         bool
	BreadScale    []breadtypes.BreadScale
	BalanceBread  int64
	MaturityPct   int
	Mature        bool
	ThresholdDays uint32
	MaxGapDays    uint32
}

// handleStashDashboard renders the Stash dashboard (REQ-041): balance in Grain
// + Bread-scale conversion (using x/bread/types.BreadScaleAll() + GrainsPerBread
// per D-073 — code constants, NOT docs) + 90-day maturity progress bar
// (StashActivity.IsMature, MaturityThresholdDays=90).
func (s *Server) handleStashDashboard(w http.ResponseWriter, r *http.Request) {
	holderID := r.PathValue("holderID")
	stash, ok := s.Store.GetStash(holderID)
	if !ok {
		http.NotFound(w, r)
		return
	}
	activity, _ := s.Store.GetStashActivity(stash.StashID)

	// D-073: Bread-scale conversion from x/bread/types code constants.
	scale := breadtypes.BreadScaleAll()
	balanceBread := stash.BalanceGrain / breadtypes.GrainsPerBread

	// Maturity progress: ActiveDays / MaturityThresholdDays, capped at 100%.
	threshold := uint32(stashtypes.MaturityThresholdDays)
	pct := int(float64(activity.ActiveDays) / float64(threshold) * 100)
	if pct > 100 {
		pct = 100
	}
	if pct < 0 {
		pct = 0
	}

	s.render(w, "stash.html", stashViewData{
		Stash:         stash,
		Activity:      activity,
		Found:         true,
		BreadScale:    scale,
		BalanceBread:  balanceBread,
		MaturityPct:   pct,
		Mature:        activity.IsMature(),
		ThresholdDays: threshold,
		MaxGapDays:    stashtypes.MaxGapForMaturity,
	})
}