use crate::config::{NetworkMode, RecordingMode};
use crate::friends::Friend;
use crate::network::PeerState;
use crate::presence::{FriendPresence, PresenceMode};
use iroh::{EndpointAddr, EndpointId};

#[derive(Debug, Clone)]
pub enum CoreCommand {
    /// Join a room. `ticket` is "create" (or empty) to mint a fresh room, else a
    /// share ticket to join. `room_name` is the creator's chosen cosmetic label
    /// for a NEW room; it's ignored when joining (the label rides in the ticket).
    Join { name: String, ticket: String, room_name: String, input_device: Option<String>, output_device: Option<String>, echo_cancellation: bool, avatar: crate::avatar::Avatar },
    Leave,
    ToggleMute,
    /// Change our avatar (W4) and re-announce it to the room over presence.
    SetAvatar(crate::avatar::Avatar),
    ToggleDeafen,
    SetPttMode(bool),
    SetPttActive(bool),
    SetPeerVolume(EndpointId, f32),
    /// Listener-side per-peer EQ. Local only; never leaves this app instance.
    SetPeerEq(EndpointId, crate::audio::eq::EqSettings),
    /// Listener-side per-peer pan. Local only; never leaves this app instance.
    SetPeerPan(EndpointId, f32),
    /// Locally mute/unmute a peer: when muted, their audio is decoded (so levels
    /// still show) but not mixed into our output.
    SetPeerMuted(EndpointId, bool),
    SetNoiseGateThreshold(f32),
    /// App-internal capture gain (mic), applied before the gate/encode. 1.0 = unity.
    SetInputVolume(f32),
    /// App-internal playback gain on the mixed output. 1.0 = unity.
    SetOutputVolume(f32),
    /// Start/stop a standalone capture-only stream that reports the raw mic
    /// level via [`UiEvent::MicLevel`], for gate calibration outside a call.
    /// Ignored while a room session is active (the in-call meter covers that).
    SetMicMonitor { enabled: bool, input_device: Option<String> },
    /// Set the relay/discovery posture. Takes effect on the next room join,
    /// since the endpoint is (re)built then.
    SetNetworkMode(NetworkMode),
    /// Start/stop recording the call to a local WAV (your mic + the incoming
    /// mix). No-op start if already recording / not in a call.
    SetRecording(bool),
    /// Set what a recording captures (mixed / per-peer stems / both). Takes
    /// effect on the next recording start. Sent at startup from config.
    SetRecordingMode(RecordingMode),
    /// Broadcast a room text-chat message. No-op when not in a call.
    SendChat(String),
    /// Set the pixelpass binary location (config override, empty = use `$PATH`).
    /// Sent at startup so screen-share can resolve the binary.
    SetPixelpassPath(Option<String>),
    /// Start sharing our screen: spawn a pixelpass host and announce its ticket
    /// on our presence so the room can watch. No-op when not in a call.
    StartScreenShare,
    /// Stop sharing our screen: kill the pixelpass host and clear the presence
    /// ticket. No-op when not sharing.
    StopScreenShare,
    /// Watch a peer's screen share: spawn a pixelpass viewer for `ticket` and
    /// open it in a local player.
    ViewShare(String),
    /// Mint a fresh persistent identity (W7), discarding the old one. Takes effect
    /// on the next room join (the endpoint is rebuilt then). The core replies with
    /// an updated [`UiEvent::IdentityStatus`].
    RegenerateIdentity,
    /// Add a friend (W7). Core owns the friends store: it mutates + persists it and
    /// replies with [`UiEvent::FriendsUpdated`]. `addr` seeds `last_addr` if known
    /// (e.g. added from a room). Idempotent — re-adding an existing id is a no-op.
    AddFriend { id: EndpointId, name: String, addr: Option<EndpointAddr> },
    /// Remove a friend by id (W7).
    RemoveFriend(EndpointId),
    /// Locally rename a friend (W7).
    RenameFriend(EndpointId, String),
    /// Set our presence posture (W7). Gates the idle listener (answer friends-only /
    /// invisible) and the outbound ping scheduler (invisible = fully dark). Sent at
    /// startup from config and whenever the user changes it.
    SetPresenceMode(PresenceMode),
}

#[derive(Debug, Clone)]
pub enum UiEvent {
    RoomJoined { ticket: String, self_id: String },
    RoomLeft,
    PeerJoined { id: EndpointId, state: PeerState },
    PeerLeft { id: EndpointId },
    PeerConnectionFailed { id: EndpointId },
    PeerUpdated { id: EndpointId, state: PeerState },
    /// Audio link to a peer is being (re)established — show a connecting state.
    PeerConnecting { id: EndpointId },
    /// Audio link to a peer is up and carrying audio.
    PeerConnected { id: EndpointId },
    AudioLevels(Vec<(EndpointId, f32)>),
    /// Raw (pre-gate, pre-mute) normalized RMS of the local mic, `0.0..=1.0`,
    /// for the settings level meter. Throttled to ~10/sec.
    MicLevel(f32),
    /// Call recording started; carries the absolute WAV path being written.
    RecordingStarted { path: String },
    /// Call recording stopped; carries the finished WAV path.
    RecordingStopped { path: String },
    /// A room text-chat message arrived from a peer (never our own — local
    /// messages are echoed by the UI on send). `from` is the sender's node id
    /// string, used to key their avatar (W4).
    ChatMessage { from: String, name: String, text: String },
    /// Our own screen share started; the UI flips the Share button to "Stop".
    ScreenShareStarted,
    /// Our own screen share stopped (or failed to start).
    ScreenShareStopped,
    /// Our node identity (W7): the current node id string, and whether it is
    /// PERSISTED to disk. Sent once at startup and again after a regenerate.
    /// `persisted = false` means the key file couldn't be read/written and we're
    /// running on an ephemeral fallback — a degraded state the UI must surface,
    /// since the id (and thus friend recognition) won't survive the next launch.
    /// `error` carries the reason when degraded, for the UI explainer.
    IdentityStatus { node_id: String, persisted: bool, error: Option<String> },
    /// The friends list (W7), now owned by core. Sent at startup (after load) and
    /// after every add/remove/rename so the GUI renders from this snapshot instead
    /// of owning the store. `read_only` is true when `friends.json` failed to load
    /// (malformed) — the GUI shows a degraded warning and disables edits so we never
    /// overwrite the damaged file (backlog A16).
    FriendsUpdated { friends: Vec<Friend>, read_only: bool },
    /// A friend's live presence from a successful ping reply (W7): online, or in a
    /// joinable gathering (with a one-click ticket). Emitted by the outbound ping
    /// scheduler; absence of a recent event = treat as offline.
    FriendPresence { id: EndpointId, presence: FriendPresence },
    /// The Discoverable time-box elapsed (W7 P6): the core auto-reverted our presence
    /// posture to the carried `mode` (always `Normal`) and stopped publishing. The
    /// GUI must mirror + persist this so its presence picker stops showing
    /// Discoverable. Distinct from a user-driven change so the GUI knows to update
    /// without having issued the command itself.
    PresenceModeReverted { mode: PresenceMode },
    Error(String),
}