/** @odoo-module **/
// Copyright 2026 Nexa Systems Inc.
// License OPL-1 (Odoo Proprietary License v1.0)

import { Component, useState, useRef, onMounted, onWillUnmount } from "@odoo/owl";
import { Dropdown } from "@web/core/dropdown/dropdown";
import { DropdownItem } from "@web/core/dropdown/dropdown_item";
import { useDropdownState } from "@web/core/dropdown/dropdown_hooks";
import { registry } from "@web/core/registry";
import { useService } from "@web/core/utils/hooks";
import { rpc } from "@web/core/network/rpc";

const SUGGESTIONS = [
    "Who had the most overtime this week?",
    "Show me late arrivals today",
    "Absence summary this month",
    "Which team is understaffed?",
];

const TOOLS = [
    { key: "anomaly", icon: "fa-exclamation-triangle", label: "Anomaly Scan" },
    { key: "understaffing", icon: "fa-users", label: "Staffing Forecast" },
    { key: "shift", icon: "fa-calendar", label: "Shift Optimizer" },
    { key: "compliance", icon: "fa-gavel", label: "Compliance Check" },
    { key: "geofence", icon: "fa-map-marker", label: "Geofence Tuning" },
];

export class FusionClockAIChat extends Component {
    static props = {};
    static template = "fusion_clock_ai.AISystray";
    static components = { Dropdown, DropdownItem };

    setup() {
        this.notification = useService("notification");
        this.chatBodyRef = useRef("chatBody");
        this.dropdown = useDropdownState();

        this.state = useState({
            activeTab: "chat",
            messages: [],
            inputText: "",
            loading: false,
            conversationId: null,
            toolLoading: null,
            toolResult: null,
        });
    }

    get suggestions() {
        return SUGGESTIONS;
    }

    get tools() {
        return TOOLS;
    }

    get hasMessages() {
        return this.state.messages.length > 0;
    }

    get canSend() {
        return this.state.inputText.trim().length > 0 && !this.state.loading;
    }

    switchTab(tab) {
        this.state.activeTab = tab;
        this.state.toolResult = null;
    }

    newConversation() {
        this.state.messages = [];
        this.state.conversationId = null;
        this.state.inputText = "";
    }

    onInput(ev) {
        this.state.inputText = ev.target.value;
    }

    onKeydown(ev) {
        if (ev.key === "Enter" && !ev.shiftKey) {
            ev.preventDefault();
            this.sendMessage();
        }
    }

    onSuggestionClick(text) {
        this.state.inputText = text;
        this.sendMessage();
    }

    _scrollToBottom() {
        const el = this.chatBodyRef.el;
        if (el) {
            requestAnimationFrame(() => {
                el.scrollTop = el.scrollHeight;
            });
        }
    }

    async sendMessage() {
        const text = this.state.inputText.trim();
        if (!text || this.state.loading) return;

        this.state.messages.push({ role: "user", content: text });
        this.state.inputText = "";
        this.state.loading = true;
        this._scrollToBottom();

        try {
            const result = await rpc("/fusion_clock_ai/manager_chat", {
                message: text,
                conversation_id: this.state.conversationId || undefined,
            });
            if (result.error) {
                this.state.messages.push({ role: "assistant", content: result.error });
                this.notification.add(result.error, { type: "warning" });
            } else {
                this.state.messages.push({ role: "assistant", content: result.response });
                this.state.conversationId = result.conversation_id;
            }
        } catch (e) {
            const errorMsg = "Failed to get AI response. Please try again.";
            this.state.messages.push({ role: "assistant", content: errorMsg });
            this.notification.add(errorMsg, { type: "danger" });
        }

        this.state.loading = false;
        this._scrollToBottom();
    }

    async runTool(toolKey) {
        if (this.state.toolLoading) return;
        this.state.toolLoading = toolKey;
        this.state.toolResult = null;

        try {
            const result = await rpc("/fusion_clock_ai/run_analysis", {
                analysis_type: toolKey,
            });
            if (result.error) {
                this.state.toolResult = { error: true, text: result.error };
                this.notification.add(result.error, { type: "warning" });
            } else {
                this.state.toolResult = { error: false, text: result.response };
            }
        } catch (e) {
            this.state.toolResult = { error: true, text: "Analysis failed. Please try again." };
            this.notification.add("Analysis failed.", { type: "danger" });
        }

        this.state.toolLoading = null;
    }
}

registry.category("systray").add("fusion_clock_ai.AISystray", {
    Component: FusionClockAIChat,
}, { sequence: 100 });