package main

// Log-aware colours in WSJT-X / JTDX's own Band Activity window (message 13),
// the way JTAlert paints them: a decode of a watchlist member, a new DXCC or a
// new band for its entity is highlighted where the operator is actually
// looking. The verdicts come from the same cluster status cache that colours
// the spot grid, so the two windows can never disagree.

import (
	"strings"

	"hamlog/internal/applog"
	"hamlog/internal/dxcc"
	udp "hamlog/internal/integrations/udp"
)

const (
	keyWsjtHighlight  = "udp.wsjt.highlight"
	keyWsjtFollowMode = "udp.wsjt.followmode" // spot clicks switch the decoder's mode
)

// wsjtModes are the modes a Configure message can meaningfully ask for — the
// decoder's own vocabulary. Anything else (CW, SSB, RTTY) is none of its
// business and is not sent.
var wsjtModes = map[string]bool{
	"FT8": true, "FT4": true, "JT65": true, "JT9": true,
	"MSK144": true, "Q65": true, "FST4": true, "JS8": false, // JS8Call speaks another protocol
}

// GetWsjtFollowMode reports whether spot clicks retune the decoder's mode.
func (a *App) GetWsjtFollowMode() bool {
	return a.settingOr(keyWsjtFollowMode, "1") == "1"
}

// SetWsjtFollowMode flips it.
func (a *App) SetWsjtFollowMode(on bool) {
	v := "0"
	if on {
		v = "1"
	}
	a.setSetting(keyWsjtFollowMode, v)
}

// ConfigureDecoderMode asks the connected decoders to switch mode — called by
// the frontend after a spot click has tuned the radio. A no-op for modes the
// decoder does not speak, and when the option is off or nothing is connected.
func (a *App) ConfigureDecoderMode(mode string) {
	mode = strings.ToUpper(strings.TrimSpace(mode))
	if a.udp == nil || !wsjtModes[mode] || !a.GetWsjtFollowMode() {
		return
	}
	a.udp.SendConfigureMode(mode)
}

// The palette. Fixed colours, not theme tokens — they are painted into another
// application's window, which has no idea what theme OpsLog wears.
var (
	hlWatchlist = udp.RGB{R: 244, G: 114, B: 182} // the watchlist pink
	hlNewDXCC   = udp.RGB{R: 22, G: 130, B: 60}   // green
	hlNewBand   = udp.RGB{R: 226, G: 122, B: 24}  // orange
	hlWhite     = udp.RGB{R: 255, G: 255, B: 255}
	hlBlack     = udp.RGB{R: 20, G: 20, B: 20}
)

// GetWsjtHighlight reports whether decode highlighting is on.
func (a *App) GetWsjtHighlight() bool {
	return a.settingOr(keyWsjtHighlight, "0") == "1"
}

// SetWsjtHighlight turns decode highlighting on or off. Turning it OFF also
// clears every instruction OpsLog installed in the running applications — a
// disabled option that leaves stale colours behind looks broken, not disabled.
func (a *App) SetWsjtHighlight(on bool) {
	v := "0"
	if on {
		v = "1"
	}
	a.setSetting(keyWsjtHighlight, v)
	a.wsjtHighlightOn.Store(on)
	if !on && a.udp != nil {
		for _, inst := range a.udp.Instances() {
			_ = a.udp.SendClearHighlights(inst)
		}
		a.wsjtHLMu.Lock()
		a.wsjtHLSent = map[string]string{}
		a.wsjtHLMu.Unlock()
		applog.Printf("wsjt highlight: off — cleared in every instance")
	}
}

// maybeHighlightDecode paints one decoded callsign in the instance that heard
// it, when the option is on and the verdict is worth a colour. De-duplicated
// per instance+call+verdict: a station CQing all evening is decoded four times
// a minute, and the instruction only needs to be said once.
func (a *App) maybeHighlightDecode(instance, call, band string) {
	if !a.wsjtHighlightOn.Load() || a.udp == nil || call == "" || instance == "" {
		return
	}
	bg, fg, verdict := a.decodeHighlightVerdict(call, band)
	key := instance + "|" + strings.ToUpper(call) + "|" + band
	a.wsjtHLMu.Lock()
	if a.wsjtHLSent == nil {
		a.wsjtHLSent = map[string]string{}
	}
	if len(a.wsjtHLSent) > 4000 { // bounded; a long session just re-says a few
		a.wsjtHLSent = map[string]string{}
	}
	prev, had := a.wsjtHLSent[key]
	if had && prev == verdict {
		a.wsjtHLMu.Unlock()
		return
	}
	a.wsjtHLSent[key] = verdict
	a.wsjtHLMu.Unlock()
	if verdict == "" {
		// Was highlighted under an earlier verdict and no longer deserves it
		// (the operator just worked them): clear that one callsign.
		if had && prev != "" {
			_ = a.udp.SendHighlight(instance, call, nil, nil, false)
		}
		return
	}
	_ = a.udp.SendHighlight(instance, call, bg, fg, false)
}

// decodeHighlightVerdict ranks a callsign: watchlist beats new-DXCC beats
// new-band; anything else is "no colour". The empty verdict doubles as the
// clear signal in maybeHighlightDecode.
func (a *App) decodeHighlightVerdict(call, band string) (bg, fg *udp.RGB, verdict string) {
	if a.watchlist != nil {
		if _, ok := a.watchlist.Match(call); ok {
			c := hlWatchlist
			f := hlBlack
			return &c, &f, "watchlist"
		}
	}
	c := a.clusterStatusMaps()
	if a.dxcc != nil {
		if m, ok := a.dxcc.Lookup(call); ok && m.Entity != nil {
			num := dxcc.EntityDXCC(m.Entity.Name)
			ent := c.entities[num]
			if ent == nil {
				bgc, fgc := hlNewDXCC, hlWhite
				return &bgc, &fgc, "new-dxcc"
			}
			if band != "" {
				if _, workedBand := ent.Bands[strings.ToLower(band)]; !workedBand {
					bgc, fgc := hlNewBand, hlBlack
					return &bgc, &fgc, "new-band"
				}
			}
		}
	}
	return nil, nil, ""
}