use std::collections::HashMap;
use std::error::Error;

use crate::core::botmodules::{ModulesManager,Listener,BotModule,BotActionTrait, BotCommand};
use crate::core::botmodules::bot_actions::actions_util;

use crate::core::botinstance::{self};
use twitch_irc::message::PrivmsgMessage;

use crate::core::botmodules::ChType;

fn adminvector() -> Vec<String> {
    vec![String::from("ModulatingForce")]
}


pub fn init(mgr:&mut ModulesManager)
{

    BotCommand {
        module : BotModule(String::from("identity")),
        command : String::from("promote"), // command call name
        alias : vec![], // String of alternative names
        exec_body : actions_util::asyncbox(cmd_promote) ,
        help : String::from("promote"),
        required_roles : vec![],
    }.add_to_modmgr(mgr);

    async fn cmd_promote(mut _chat:botinstance::Chat,_msg:PrivmsgMessage) {
        //println!("(#{}) {}: {}", msg.channel_login, msg.sender.name, msg.message_text);


    }

    BotCommand {
        module : BotModule(String::from("identity")),
        command : String::from("demote"), // command call name
        alias : vec![], // String of alternative names
        exec_body : actions_util::asyncbox(cmd_demote) ,
        help : String::from("demote"),
        required_roles : vec![],
    }.add_to_modmgr(mgr);


    async fn cmd_demote(mut _chat:botinstance::Chat,_msg:PrivmsgMessage) {

    }


}


pub enum UserRole {
	Chatter,
	Mod(ChType), // String specifies Channel
	SupMod(ChType), // String specifies Channel
	Broadcaster,
	BotAdmin,
    
}


enum Permissible {
	Allow,
	Block
}

pub struct IdentityManager {
    special_roles_users : HashMap<String,Vec<UserRole>>,
} 

enum ChatBadge {
    Broadcaster,
    Mod,
}


impl IdentityManager {

    pub fn init() -> IdentityManager {
        let mut a = HashMap::new();
        for admn in adminvector() {
            a.insert(admn.to_lowercase(),vec![UserRole::BotAdmin]);
        };

        IdentityManager {
            special_roles_users : a,
        }
    }

    pub fn canUserRun(self,
        usr:String,
        channelname:ChType,
        chatBadge:ChatBadge,
        cmdreqroles:Vec<UserRole>
        ) -> Result<Permissible,Box<dyn Error>> {
            /*
            canUserRun -

            Input : 
                usr:String,
                channelname:ChType,
                chatBadge:ChatBadge,
                cmdreqroles:Vec<UserRole>

            Output : Result<Permissible,Box<dyn Error>> 
                Some Possible outcomes : Ok(Permissible::Allow) , Ok(Permissible::Block) 


            Description
                For a Given Chatter (with any special ChatBadge) who ran the Command at a Given Channel , check if that user can
                run the command based on the given cmdreqroles required by the command

                Inputs and business logic determine if the user can run the command based on the command's required roles
             */


             // Requirements
             /*
                [ ] If cmdreqroles is empty vector , automatically assume Ok(Permissible::Allow)
                [ ] If chatBadge::Broadcaster  ...
                    [ ] and cmdreqroles includes UserRole::Broadcaster , Ok(Permissible::Allow)
                    [ ] and cmdreqroles includes UserRole::Mod("") OR UserRole::SupMod("")  , Ok(Permissible::Allow)
                [ ] If cmdreqroles includes UserRole::Mod("") , checks if chatter has UserRole::Mod(channelname::ChType) to determine if Ok(Permissible::Allow)
                [ ] If cmdreqroles includes UserRole::SupMod("") , checks if chatter has UserRole::SupMod(channelname::ChType) to determine if Ok(Permissible::Allow)
                [ ] If cmdreqroles includes UserRole::BotAdmin and chatter has UserRole::BotAdmin , Ok(Permissible::Allow)
                [ ] Otherwise, Ok(Permissible::Block)
             */


            Ok(Permissible::Allow)
        }
}