use internal::prelude::*;
use model::id::{ChannelId, RoleId};
use utils::VecMap;

/// 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 VecMap<&'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) -> 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) -> 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(mut self, nickname: &str) -> 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>>(self, roles: It) -> Self {
        let roles = roles
            .into_iter()
            .map(|x| Value::Number(Number::from(x.as_ref().0)))
            .collect();

        self._roles(roles)
    }

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

        self
    }

    /// 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>>(self, channel_id: C) -> Self {
        self._voice_channel(channel_id.into())
    }

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

        self
    }
}