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use crate::internal::prelude::*;
use crate::model::id::{ChannelId, RoleId};
use std::collections::HashMap;

/// A builder which edits the properties of a [`Member`], to be used in
/// conjunction with [`Member::edit`].
///
/// [`Member`]: ../model/guild/struct.Member.html
/// [`Member::edit`]: ../model/guild/struct.Member.html#method.edit
#[derive(Clone, Debug, Default)]
pub struct EditMember(pub HashMap<&'static str, Value>);

impl EditMember {
    /// Whether to deafen the member.
    ///
    /// Requires the [Deafen Members] permission.
    ///
    /// [Deafen Members]: ../model/permissions/struct.Permissions.html#associatedconstant.DEAFEN_MEMBERS
    pub fn deafen(&mut self, deafen: bool) -> &mut Self {
        self.0.insert("deaf", Value::Bool(deafen));
        self
    }

    /// Whether to mute the member.
    ///
    /// Requires the [Mute Members] permission.
    ///
    /// [Mute Members]: ../model/permissions/struct.Permissions.html#associatedconstant.MUTE_MEMBERS
    pub fn mute(&mut self, mute: bool) -> &mut Self {
        self.0.insert("mute", Value::Bool(mute));
        self
    }

    /// Changes the member's nickname. Pass an empty string to reset the
    /// nickname.
    ///
    /// Requires the [Manage Nicknames] permission.
    ///
    /// [Manage Nicknames]: ../model/permissions/struct.Permissions.html#associatedconstant.MANAGE_NICKNAMES
    pub fn nickname<S: ToString>(&mut self, nickname: S) -> &mut Self {
        self.0.insert("nick", Value::String(nickname.to_string()));
        self
    }

    /// Set the list of roles that the member should have.
    ///
    /// Requires the [Manage Roles] permission to modify.
    ///
    /// [Manage Roles]: ../model/permissions/struct.Permissions.html#associatedconstant.MANAGE_ROLES
    pub fn roles<T: AsRef<RoleId>, It: IntoIterator<Item=T>>(&mut self, roles: It) -> &mut Self {
        let role_ids = roles
            .into_iter()
            .map(|x| Value::Number(Number::from(x.as_ref().0)))
            .collect();

        self._roles(role_ids);
        self
    }

    fn _roles(&mut self, roles: Vec<Value>) {
        self.0.insert("roles", Value::Array(roles));
    }

    /// The Id of the voice channel to move the member to.
    ///
    /// Requires the [Move Members] permission.
    ///
    /// [Move Members]: ../model/permissions/struct.Permissions.html#associatedconstant.MOVE_MEMBERS
    #[inline]
    pub fn voice_channel<C: Into<ChannelId>>(&mut self, channel_id: C) -> &mut Self {
        self._voice_channel(channel_id.into());

        self
    }

    fn _voice_channel(&mut self, channel_id: ChannelId) {
        let num = Value::Number(Number::from(channel_id.0));
        self.0.insert("channel_id", num);
    }

    /// Disconnects the user from their voice channel if any
    ///
    /// Requires the [Move Members] permission.
    ///
    /// [Move Members]: ../model/permissions/struct.Permissions.html#associatedconstant.MOVE_MEMBERS
    pub fn disconnect_member(&mut self) -> &mut Self {
        self.0.insert("channel_id", Value::Null);

        self
    }
}