/** @odoo-module **/
// Fusion Claims — Posting Period Countdown
// Reads the submission_deadline_dt field, computes "Nd Xh to cutoff" client-side,
// re-renders every 60 seconds, swaps colour class as the deadline approaches.
// Copyright 2026 Nexa Systems Inc.
// License OPL-1

import { Component, useState, onWillDestroy } from "@odoo/owl";
import { registry } from "@web/core/registry";
import { standardFieldProps } from "@web/views/fields/standard_field_props";

class FcPostingCountdown extends Component {
    static template = "fusion_claims.PostingCountdown";
    static props = { ...standardFieldProps };

    setup() {
        this.state = useState({ text: "", level: "info" });
        this._render();
        this._timer = setInterval(() => this._render(), 60_000);
        onWillDestroy(() => {
            if (this._timer) {
                clearInterval(this._timer);
                this._timer = null;
            }
        });
    }

    _render() {
        const deadline = this.props.record.data[this.props.name];
        if (!deadline) {
            this.state.text = "";
            this.state.level = "muted";
            return;
        }
        // Odoo provides a luxon DateTime for Datetime fields
        const now = luxon.DateTime.now();
        const diff = deadline.diff(now, ["days", "hours", "minutes"]).toObject();

        if (diff.days < 0 || (diff.days === 0 && diff.hours < 0)) {
            this.state.text = "Cutoff passed";
            this.state.level = "muted";
            return;
        }

        const days = Math.floor(diff.days);
        const hours = Math.floor(diff.hours);

        if (days < 1) {
            this.state.text = `${hours}h to cutoff`;
            this.state.level = "danger";
        } else if (days < 3) {
            this.state.text = `${days}d ${hours}h to cutoff`;
            this.state.level = "warning";
        } else {
            this.state.text = `${days} days to cutoff`;
            this.state.level = "info";
        }
    }
}

registry.category("fields").add("fc_posting_countdown", {
    component: FcPostingCountdown,
});