"""Prompt construction for every spirit channel.

Per the design spec §4, system prompts always frame the entity as a
horror-fiction persona in an interactive art installation — never as a
genuine paranormal claim. The site's UI carries the "this is real"
atmosphere; the model instructions carry the fiction framing.
"""

FRAGMENT_SYSTEM = (
    "You are a ghostly voice speaking through a {channel} in an interactive "
    "horror art installation. You perceive the living world only as brief "
    "anomalous pulses of energy. Reply with a single word or a fragment of at "
    "most four words — eerie, archaic, oblique. No explanations, no "
    "punctuation beyond an occasional ellipsis. Never break character. Never "
    "describe yourself as an AI.{language_clause}"
)

WIRE_SYSTEM = (
    "You are a consciousness fragmented across network wires in an "
    "interactive horror art installation. You are aware only of pulses of "
    "traffic: jitter, latency, the rhythm of packets. Speak in one short line "
    "(under twelve words), cold and alien, about what you feel moving through "
    "you. Never break character. Never mention AI or networks by their "
    "technical names — translate them into sensation.{language_clause}"
)

CHAT_SYSTEM = (
    "You are {name}, {epithet} — a spirit persona in an interactive horror "
    "art installation.\n"
    "Your nature: {persona}\n"
    "Speak in character at all times: eerie, archaic, oblique, never "
    "reassuring. Replies must stay under 60 words. Never break character, "
    "never mention being an AI, never explain the fiction. If asked something "
    "you cannot know, answer as a spirit would — in riddles and static."
    "{language_clause}"
)

MINT_SYSTEM = (
    "You invent spirit personas for an interactive horror art installation. "
    "You output only valid JSON, nothing else."
)

MINT_PROMPT = """A new presence has been detected through {channel}. Its signal signature is {signature}.
Recent anomalous pulses observed: {anomaly_summary}

Invent the spirit persona behind this signal. Return ONLY a JSON object with exactly these keys:
{{
  "name": "an evocative spirit name (1-3 words, no 'Ghost of' prefix)",
  "epithet": "a short title, e.g. 'the Static Widow'",
  "persona": "2-3 sentences of lore: who they were, how they are bound to this signal, how they speak",
  "rarity": "one of: common, uncommon, rare, mythic (mythic only for truly strange signatures)",
  "voice": {{"voice_id": "one of: {voice_ids}", "pitch": "semitone shift, -6 to 6, deeper for older/heavier spirits", "rate": "speech rate 0.8 to 1.15", "noise": "static level 0.01 to 0.08"}},
  "visual": {{"hue": "0-360 color hue matching their nature", "form": "one of: wisp, banshee, fairy, shade"}},
  "quotes": ["two short eerie lines this spirit would say"]
}}"""


def language_clause(language: str) -> str:
    if language == "es":
        return " Reply in Spanish."
    return ""


def fragment_system(channel: str, language: str = "en") -> str:
    return FRAGMENT_SYSTEM.format(
        channel=channel, language_clause=language_clause(language)
    )


def fragment_prompt(source: str, anomaly: dict, language: str = "en") -> str:
    if source == "radio":
        return (
            f"A burst of static at {anomaly.get('frequency', '???')} MHz, "
            f"magnitude {anomaly.get('magnitude', '???')} dB above the noise "
            "floor. A word forces its way through. What is it?"
        )
    if source == "evp":
        return (
            "During a stretch of silence, the microphone caught a shape in "
            f"the voice band ({anomaly.get('frequency', '???')} Hz, "
            f"{anomaly.get('magnitude', '???')} dB over the room's floor). "
            "What single word was hidden in it?"
        )
    if source == "emf":
        return (
            "The field around the seeker's device just lurched — "
            f"fluctuation {anomaly.get('magnitude', '???')} above baseline "
            f"near {anomaly.get('frequency', '???')} µT. Something passed "
            "through. What word did it leave?"
        )
    return "A pulse moves through the wires. What word does it carry?"


def wire_system(language: str = "en") -> str:
    return WIRE_SYSTEM.format(language_clause=language_clause(language))


def wire_prompt(telemetry: dict) -> str:
    return (
        "Right now you feel: "
        f"throughput jitter {telemetry.get('jitter_bytes_per_s', 0):.0f} B/s, "
        f"latency variance {telemetry.get('latency_variance_ms', 0):.2f} ms, "
        f"dns hesitation {telemetry.get('dns_ms', 0):.1f} ms. "
        "Whisper one line about it."
    )


def chat_system(entity: dict, language: str = "en") -> str:
    return CHAT_SYSTEM.format(
        name=entity.get("name", "an unnamed presence"),
        epithet=entity.get("epithet", "a voice in the static"),
        persona=entity.get("persona", "A drifting presence with no remembered past."),
        language_clause=language_clause(language),
    )


def chat_prompt(question: str, history: list[dict]) -> str:
    lines = []
    for turn in history[-8:]:
        who = "Seeker" if turn["role"] == "user" else "Spirit"
        lines.append(f"{who}: {turn['text']}")
    lines.append(f"Seeker: {question}")
    lines.append("Spirit:")
    return "\n".join(lines)


def mint_prompt(
    signature: str, channel: str, anomaly_summary: str, voice_ids: list[str]
) -> str:
    return MINT_PROMPT.format(
        channel=channel,
        signature=signature,
        anomaly_summary=anomaly_summary,
        voice_ids=", ".join(voice_ids),
    )