/** @odoo-module **/

import { Component, useState, onWillStart, onMounted, onWillUnmount } from "@odoo/owl";
import { rpc } from "@web/core/network/rpc";
import { registry } from "@web/core/registry";
import { useService } from "@web/core/utils/hooks";

export class FusionClockFAB extends Component {
    static props = {};
    static template = "fusion_clock.ClockFAB";

    setup() {
        this.notification = useService("notification");

        this.state = useState({
            isCheckedIn: false,
            isDisplayed: false,
            expanded: false,
            checkInTime: null,
            locationName: "",
            timerDisplay: "00:00:00",
            todayHours: "0.0",
            weekHours: "0.0",
            loading: false,
            error: "",
        });

        this._timerInterval = null;

        onWillStart(async () => {
            await this._fetchStatus();
        });

        onMounted(() => {
            if (this.state.isCheckedIn) {
                this._startTimer();
            }
            // Poll every 15s to stay in sync with portal clock-outs
            this._pollInterval = setInterval(() => this._fetchStatus(), 15000);

            // Re-sync immediately when browser tab regains focus
            this._onFocus = () => this._fetchStatus();
            window.addEventListener("focus", this._onFocus);

            // Close panel when clicking outside
            this._onDocClick = (ev) => {
                if (!this.state.expanded) return;
                const el = ev.target.closest(".fclk-fab-wrapper");
                if (!el) this.state.expanded = false;
            };
            document.addEventListener("click", this._onDocClick, true);
        });

        onWillUnmount(() => {
            this._stopTimer();
            if (this._pollInterval) clearInterval(this._pollInterval);
            if (this._onDocClick) document.removeEventListener("click", this._onDocClick, true);
            if (this._onFocus) window.removeEventListener("focus", this._onFocus);
        });
    }

    togglePanel() {
        this.state.expanded = !this.state.expanded;
        this.state.error = "";
        // Always re-fetch when opening the panel
        if (this.state.expanded) {
            this._fetchStatus();
        }
    }

    async _fetchStatus() {
        try {
            const result = await rpc("/fusion_clock/get_status", {});
            if (result.error) {
                this.state.isDisplayed = false;
                return;
            }
            this.state.isDisplayed = result.enable_clock !== false;
            this.state.isCheckedIn = result.is_checked_in;
            this.state.locationName = result.location_name || "";
            this.state.todayHours = (result.today_hours || 0).toFixed(1);
            this.state.weekHours = (result.week_hours || 0).toFixed(1);

            if (result.is_checked_in && result.check_in) {
                this.state.checkInTime = new Date(result.check_in + "Z");
                this._startTimer();
            } else {
                this.state.checkInTime = null;
                this._stopTimer();
                this.state.timerDisplay = "00:00:00";
            }
        } catch (e) {
            this.state.isDisplayed = false;
        }
    }

    async onClockAction() {
        this.state.loading = true;
        this.state.error = "";

        try {
            let lat = 0, lng = 0, acc = 0;
            if (navigator.geolocation) {
                try {
                    const pos = await new Promise((resolve, reject) => {
                        navigator.geolocation.getCurrentPosition(resolve, reject, {
                            enableHighAccuracy: true,
                            timeout: 15000,
                            maximumAge: 0,
                        });
                    });
                    lat = pos.coords.latitude;
                    lng = pos.coords.longitude;
                    acc = pos.coords.accuracy;
                } catch (geoErr) {
                    this.state.error = "Location access denied.";
                    this.state.loading = false;
                    return;
                }
            }

            const result = await rpc("/fusion_clock/clock_action", {
                latitude: lat,
                longitude: lng,
                accuracy: acc,
                source: "backend_fab",
            });

            if (result.error) {
                this.state.error = result.error;
                this.state.loading = false;
                return;
            }

            if (result.action === "clock_in") {
                this.state.isCheckedIn = true;
                this.state.checkInTime = new Date(result.check_in + "Z");
                this.state.locationName = result.location_name || "";
                this._startTimer();
                this.notification.add(result.message || "Clocked in!", { type: "success" });
            } else if (result.action === "clock_out") {
                this.state.isCheckedIn = false;
                this.state.checkInTime = null;
                this._stopTimer();
                this.state.timerDisplay = "00:00:00";
                this.notification.add(result.message || "Clocked out!", { type: "success" });
                await this._fetchStatus();
            }
        } catch (e) {
            this.state.error = e.message || "Clock action failed.";
        }

        this.state.loading = false;
    }

    _startTimer() {
        this._stopTimer();
        this._updateTimer();
        this._timerInterval = setInterval(() => this._updateTimer(), 1000);
    }

    _stopTimer() {
        if (this._timerInterval) {
            clearInterval(this._timerInterval);
            this._timerInterval = null;
        }
    }

    _updateTimer() {
        if (!this.state.checkInTime) return;
        const now = new Date();
        let diff = Math.max(0, Math.floor((now - this.state.checkInTime) / 1000));
        const h = Math.floor(diff / 3600);
        const m = Math.floor((diff % 3600) / 60);
        const s = diff % 60;
        const pad = (n) => (n < 10 ? "0" + n : "" + n);
        this.state.timerDisplay = pad(h) + ":" + pad(m) + ":" + pad(s);
    }
}

registry.category("main_components").add("FusionClockFAB", {
    Component: FusionClockFAB,
});