/** @jsx h */
import { Fragment, h } from "https://esm.sh/preact@10.11.3";
import { tw } from "https://esm.sh/twind@0.16.16";

import { Database_Contextual_View } from "../database.ts";
import { Avatar } from "./components/avatar.tsx";
import { CenterClass, IconButtonClass, LinearGradientsClass } from "./components/tw.ts";
import { sortUserInfo, UserInfo } from "./contact-list.ts";
import { EventEmitter } from "../event-bus.ts";
import { PinIcon, UnpinIcon } from "./icons/mod.tsx";
import { DM_EditorModel } from "./editor.tsx";
import { Search } from "./search.tsx";
import { SearchModel, SearchUpdate } from "./search_model.ts";
import { PublicKey } from "https://raw.githubusercontent.com/BlowaterNostr/nostr.ts/main/key.ts";
import {
    groupBy,
    NostrAccountContext,
} from "https://raw.githubusercontent.com/BlowaterNostr/nostr.ts/main/nostr.ts";
import { PinContact, UnpinContact } from "../nostr.ts";
import { AddIcon } from "./icons2/add-icon.tsx";
import { PrimaryBackgroundColor, PrimaryTextColor } from "./style/colors.ts";

type Props = {
    myAccountContext: NostrAccountContext;
    database: Database_Contextual_View;
    eventEmitter: EventEmitter<ContactUpdate>;

    // Model
    userInfoMap: Map<string, UserInfo>;
    currentSelected: PublicKey | undefined;
    search: SearchModel;
    editors: Map<string, DM_EditorModel>;
    selectedContactGroup: ContactGroup;
    hasNewMessages: Set<string>;
};

export type ContactGroup = "Contacts" | "Strangers";

export type ContactUpdate = SelectGroup | SearchUpdate | PinContact | UnpinContact;

export type SelectGroup = {
    type: "SelectGroup";
    group: ContactGroup;
};

export function ContactList(props: Props) {
    const t = Date.now();
    const groups = groupBy(props.userInfoMap, ([_, userInfo]) => {
        if (
            userInfo.newestEventReceivedByMe == undefined ||
            userInfo.newestEventSendByMe == undefined
        ) {
            return "Strangers";
        } else {
            return "Contacts";
        }
    });

    console.log("ContactList groupBy", Date.now() - t);
    let contacts = groups.get("Contacts");
    if (contacts == undefined) {
        contacts = [];
    }
    let strangers = groups.get("Strangers");
    if (strangers == undefined) {
        strangers = [];
    }
    const listToRender = props.selectedContactGroup == "Contacts" ? contacts : strangers;

    const contactsToRender = listToRender
        .map(([pubkey, contact]) => {
            let userInfo = props.userInfoMap.get(pubkey);
            if (userInfo == undefined) {
                throw new Error("impossible");
            }
            return {
                userInfo: userInfo,
                isMarked: props.hasNewMessages.has(pubkey),
            };
        });
    console.log("ContactList:contactsToRender", Date.now() - t);

    return (
        <div class={tw`h-full flex flex-col mobile:w-full desktop:w-64 bg-[#2F3136]`}>
            <div
                class={tw`flex items-center justify-between px-4 h-20 border-b border-[#36393F]`}
            >
                <button
                    onClick={() => {
                        props.eventEmitter.emit({
                            type: "StartSearch",
                        });
                    }}
                    class={tw`w-full h-[2.5rem] text-[${PrimaryTextColor}] ${IconButtonClass} ${LinearGradientsClass} hover:bg-gradient-to-l`}
                >
                    New Chat
                    <AddIcon
                        class={tw`w-[1.5rem] h-[1.5rem]`}
                        style={{
                            fill: PrimaryTextColor,
                        }}
                    />
                </button>
            </div>

            <ul class={tw`bg-[#36393F] w-full flex h-[3rem] border-b border-[#36393F]`}>
                <li
                    class={tw`h-full flex-1 cursor-pointer hover:text-[#F7F7F7] text-[#96989D] bg-[#2F3136] hover:bg-[#42464D] ${CenterClass} ${
                        props.selectedContactGroup == "Contacts"
                            ? "border-b-2 border-[#54D48C] bg-[#42464D] text-[#F7F7F7]"
                            : ""
                    }`}
                    onClick={() => {
                        props.eventEmitter.emit({
                            type: "SelectGroup",
                            group: "Contacts",
                        });
                    }}
                >
                    Contacts: {contacts.length}
                </li>
                <li class={tw`w-[0.05rem] h-full bg-[#2F3136]`}></li>
                <li
                    class={tw`h-full flex-1 cursor-pointer hover:text-[#F7F7F7] text-[#96989D] bg-[#2F3136] hover:bg-[#42464D] ${CenterClass} ${
                        props.selectedContactGroup == "Strangers"
                            ? "border-b-2 border-[#54D48C] bg-[#42464D] text-[#F7F7F7]"
                            : ""
                    }`}
                    onClick={() => {
                        props.eventEmitter.emit({
                            type: "SelectGroup",
                            group: "Strangers",
                        });
                    }}
                >
                    Strangers: {strangers.length}
                </li>
            </ul>

            <ContactGroup
                contacts={Array.from(contactsToRender.values())}
                currentSelected={props.currentSelected}
                eventEmitter={props.eventEmitter}
            />

            {props.search.isSearching
                ? (
                    <Search
                        model={props.search}
                        deps={{
                            eventEmitter: props.eventEmitter,
                        }}
                    />
                )
                : undefined}
        </div>
    );
}

type ConversationListProps = {
    contacts: { userInfo: UserInfo; isMarked: boolean }[];
    currentSelected: PublicKey | undefined;
    eventEmitter: EventEmitter<ContactUpdate>;
};

function ContactGroup(props: ConversationListProps) {
    const t = Date.now();
    props.contacts.sort((a, b) => {
        return sortUserInfo(a.userInfo, b.userInfo);
    });
    const pinned = [];
    const unpinned = [];
    for (const contact of props.contacts) {
        if (contact.userInfo.pinEvent && contact.userInfo.pinEvent.content.type == "PinContact") {
            pinned.push(contact);
        } else {
            unpinned.push(contact);
        }
    }
    // console.log("ContactGroup", Date.now() - t);
    return (
        <ul class={tw`overflow-auto flex-1 p-2 text-[#96989D]`}>
            {pinned.map((contact) => {
                return (
                    <li
                        class={tw`${
                            props.currentSelected && contact.userInfo.pubkey.hex ===
                                    props.currentSelected.hex
                                ? "bg-[#42464D] text-[#FFFFFF]"
                                : "bg-[#42464D] text-[#96989D]"
                        } cursor-pointer p-2 hover:bg-[#3C3F45] my-2 rounded-lg flex items-center w-full relative group`}
                        onClick={() => {
                            props.eventEmitter.emit({
                                type: "SelectProfile",
                                pubkey: contact.userInfo.pubkey,
                            });
                        }}
                    >
                        <ConversationListItem
                            userInfo={contact.userInfo}
                            isMarked={contact.isMarked}
                        />

                        <button
                            class={tw`w-6 h-6 absolute hidden group-hover:flex top-[-0.75rem] right-[0.75rem] ${IconButtonClass} bg-[#42464D] hover:bg-[#2F3136]`}
                            style={{
                                boxShadow: "2px 2px 5px 0 black",
                            }}
                            onClick={(e) => {
                                e.stopPropagation();
                                props.eventEmitter.emit({
                                    type: "UnpinContact",
                                    pubkey: contact.userInfo.pubkey.hex,
                                });
                            }}
                        >
                            <UnpinIcon
                                class={tw`w-4 h-4`}
                                style={{
                                    fill: "#ED4245",
                                }}
                            />
                        </button>
                    </li>
                );
            })}

            {unpinned.map((contact) => {
                return (
                    <li
                        class={tw`${
                            props.currentSelected && contact.userInfo?.pubkey.hex ===
                                    props.currentSelected.hex
                                ? "bg-[#42464D] text-[#FFFFFF]"
                                : "bg-transparent text-[#96989D]"
                        } cursor-pointer p-2 hover:bg-[#3C3F45] my-2 rounded-lg flex items-center w-full relative group`}
                        onClick={() => {
                            props.eventEmitter.emit({
                                type: "SelectProfile",
                                pubkey: contact.userInfo.pubkey,
                            });
                        }}
                    >
                        <ConversationListItem
                            userInfo={contact.userInfo}
                            isMarked={contact.isMarked}
                        />

                        <button
                            class={tw`w-6 h-6 absolute hidden group-hover:flex top-[-0.75rem] right-[0.75rem] ${IconButtonClass} bg-[#42464D] hover:bg-[#2F3136]`}
                            style={{
                                boxShadow: "2px 2px 5px 0 black",
                            }}
                            onClick={(e) => {
                                e.stopPropagation();
                                props.eventEmitter.emit({
                                    type: "PinContact",
                                    pubkey: contact.userInfo.pubkey.hex,
                                });
                            }}
                        >
                            <PinIcon
                                class={tw`w-4 h-4`}
                                style={{
                                    fill: "rgb(185, 187, 190)",
                                    stroke: "rgb(185, 187, 190)",
                                    strokeWidth: 2,
                                }}
                            />
                        </button>
                    </li>
                );
            })}
        </ul>
    );
}

type ListItemProps = {
    userInfo: UserInfo;
    isMarked: boolean;
};

function ConversationListItem(props: ListItemProps) {
    return (
        <Fragment>
            <Avatar
                class={tw`w-8 h-8 mr-2`}
                picture={props.userInfo.profile?.content.picture}
            />
            <div
                class={tw`flex-1 overflow-hidden relative`}
            >
                <p class={tw`truncate w-full`}>
                    {props.userInfo.profile?.content.name || props.userInfo.pubkey.bech32()}
                </p>
                {props.userInfo.newestEventReceivedByMe !== undefined
                    ? (
                        <p
                            class={tw`text-[#78828B] text-[0.8rem] truncate`}
                        >
                            {new Date(
                                props.userInfo.newestEventReceivedByMe
                                    .created_at * 1000,
                            ).toLocaleString()}
                        </p>
                    )
                    : undefined}

                {props.isMarked
                    ? (
                        <span
                            class={tw`absolute rounded-full h-2 w-2 bottom-2 right-2 bg-[#54D48C]`}
                        >
                        </span>
                    )
                    : undefined}
                {props.userInfo.pinEvent != undefined && props.userInfo.pinEvent.content.type == "PinContact"
                    ? (
                        <PinIcon
                            class={tw`w-3 h-3 absolute top-0 right-0`}
                            style={{
                                fill: "rgb(185, 187, 190)",
                                stroke: "rgb(185, 187, 190)",
                                strokeWidth: 2,
                            }}
                        />
                    )
                    : undefined}
            </div>
        </Fragment>
    );
}