"""
Greeter routine - a worked example of sequencing several subsystems.

Shows how one button can drive mode, motion, speech, screen and lights together,
which is the usual reason to write an extension rather than clicking four tabs.
"""

import asyncio

from backend.plugin_api import Plugin

plugin = Plugin(
    id="greeter",
    name="Greeter routine",
    description="A one-button welcome: stand, wave, speak, smile, glow.",
    icon="\U0001F44B",
    order=10,
)

GREETINGS = {
    "en": "Hello, I am X2. Nice to meet you.",
    "formal": "Good day. Welcome. How may I assist you?",
    "short": "Hi there.",
}


@plugin.select("phrase", label="Greeting", default="en", options=[
    {"value": "en", "label": "Friendly"},
    {"value": "formal", "label": "Formal"},
    {"value": "short", "label": "Short"},
])
async def phrase(ctx, value):
    ctx.storage["phrase"] = value
    return f"Greeting set to '{value}'"


@plugin.toggle("with_lights", label="Include light cue", default=True)
async def with_lights(ctx, value):
    ctx.storage["with_lights"] = value
    return "Light cue on" if value else "Light cue off"


@plugin.action("run", label="Run greeting", style="primary", icon="▶",
               help="Requires clear space around the robot.")
async def run(ctx):
    if ctx.storage.get("running"):
        return {"ok": False, "message": "Greeting already running"}

    ctx.storage["running"] = True
    try:
        # Preset motions need Stable stand, so get there first if we are not.
        if ctx.state.mode != "STAND_DEFAULT":
            outcome = await ctx.bridge.set_mode("STAND_DEFAULT")
            if not outcome.ok:
                return {"ok": False, "message": f"Could not enter Stable stand: {outcome.message}"}
            await asyncio.sleep(1.5)

        if ctx.storage.get("with_lights", True):
            await ctx.bridge.set_led(mode=1, r=57, g=135, b=229)

        await ctx.bridge.play_emoji(90, mode=1)          # Happy
        await ctx.bridge.play_preset(motion=1002, area=2)  # Right-hand wave

        text = GREETINGS.get(ctx.storage.get("phrase", "en"), GREETINGS["en"])
        await ctx.bridge.speak(text, priority=6)

        ctx.storage["count"] = ctx.storage.get("count", 0) + 1
        await ctx.push("count", ctx.storage["count"])
        await ctx.log(f"Greeting played ({ctx.storage['count']} total)")
        return "Greeting played"
    finally:
        ctx.storage["running"] = False


@plugin.action("goodbye", label="Say goodbye", style="default", icon="\U0001F44B")
async def goodbye(ctx):
    if ctx.state.mode != "STAND_DEFAULT":
        return {"ok": False, "message": "Switch to Stable stand first"}
    await ctx.bridge.play_emoji(110, mode=1)            # Sad
    # TURN_WAVE_HAND (2001), whole body. The documented "wave goodbye" id 3031
    # does not exist in this firmware's McPresetMotion enum.
    await ctx.bridge.play_preset(motion=2001, area=11)
    await ctx.bridge.speak("Goodbye. See you soon.", priority=6)
    return "Goodbye played"


plugin.readout("count", "Greetings played", precision=0)


@plugin.on_start
async def start(ctx):
    ctx.storage.setdefault("count", 0)
    ctx.storage.setdefault("phrase", "en")
    ctx.storage.setdefault("with_lights", True)
    await ctx.push("count", ctx.storage["count"])