/** @odoo-module **/
import { Component, onMounted, onWillUpdateProps } from "@odoo/owl";

export class MindmapRenderer extends Component {
    setup() {
        super.setup();
    }

    get treeData() {
        return this.props.treeData;
    }

    onMounted() {
        this._renderTree();
    }

    onWillUpdateProps() {
        // 等待 owl 完成 DOM patch 后再重绘 d3，避免直接操作 DOM 与 owl 冲突
        Promise.resolve().then(() => this._renderTree());
    }

    _renderTree() {
        const d3 = window.d3;
        if (!d3) {
            console.error("[Mindmap] D3.js not loaded");
            return;
        }
        const container = this.el?.querySelector?.(".mindmap-renderer-root");
        if (!container || !this.treeData) return;

        const width = Math.max(container.clientWidth, 900);
        const height = 560;

        // 清空后重绘
        container.innerHTML = "";

        const svg = d3
            .select(container)
            .append("svg")
            .attr("width", width)
            .attr("height", height)
            .attr("class", "mindmap-svg");

        const g = svg.append("g").attr("class", "mindmap-zoom-group");

        const zoom = d3
            .zoom()
            .scaleExtent([0.15, 4])
            .on("zoom", (event) => {
                g.attr("transform", event.transform);
            });
        svg.call(zoom);

        const root = d3.hierarchy(this.treeData);
        root.descendants().forEach((d) => {
            d.dataId = d.data.id;
        });

        const treeLayout = d3.tree().nodeSize([50, 220]);
        treeLayout(root);

        // 竖直居中
        const x0 = d3.min(root.descendants(), (d) => d.x) || 0;
        const x1 = d3.max(root.descendants(), (d) => d.x) || 0;
        const initialTransform = d3.zoomIdentity.translate(
            80,
            (height - (x1 + x0)) / 2
        );
        svg.call(zoom.transform, initialTransform);

        // 连接线
        g.selectAll(".mindmap-link")
            .data(root.links())
            .enter()
            .append("path")
            .attr("class", "mindmap-link")
            .attr("fill", "none")
            .attr("stroke", "#90A4AE")
            .attr("stroke-width", 1.5)
            .attr("opacity", 0.6)
            .attr("d", (d) => {
                return `M${d.source.y},${d.source.x}
                        C${(d.source.y + d.target.y) / 2},${d.source.x}
                         ${(d.source.y + d.target.y) / 2},${d.target.x}
                         ${d.target.y},${d.target.x}`;
            });

        // 节点
        const nodes = g
            .selectAll(".mindmap-node")
            .data(root.descendants())
            .enter()
            .append("g")
            .attr("class", "mindmap-node")
            .attr("transform", (d) => `translate(${d.y},${d.x})`)
            .style("cursor", "pointer");

        nodes
            .append("rect")
            .attr("rx", 6)
            .attr("ry", 6)
            .attr("width", 160)
            .attr("height", 36)
            .attr("x", -80)
            .attr("y", -18)
            .attr("fill", (d) => (d.children ? "#1E88E5" : "#43A047"))
            .attr("stroke", (d) => (d.children ? "#1565C0" : "#2E7D32"))
            .attr("stroke-width", 1.5)
            .style("filter", "drop-shadow(1px 2px 3px rgba(0,0,0,0.2))")
            .on("mouseenter", function () {
                d3.select(this)
                    .transition()
                    .duration(150)
                    .attr("stroke-width", 2.5)
                    .style("filter", "drop-shadow(2px 4px 6px rgba(0,0,0,0.35))");
            })
            .on("mouseleave", function () {
                d3.select(this)
                    .transition()
                    .duration(150)
                    .attr("stroke-width", 1.5)
                    .style("filter", "drop-shadow(1px 2px 3px rgba(0,0,0,0.2))");
            });

        nodes
            .append("text")
            .attr("text-anchor", "middle")
            .attr("dominant-baseline", "central")
            .attr("fill", "#fff")
            .style("font-size", "13px")
            .style("font-weight", "500")
            .style("pointer-events", "none")
            .text((d) => {
                const name = d.data.name || "";
                return name.length > 14 ? name.substring(0, 13) + "…" : name;
            });

        // 进度环（有进度的叶子任务）
        nodes
            .filter((d) => !d.children && d.data.progress && d.data.progress > 0)
            .append("circle")
            .attr("cx", 66)
            .attr("cy", -14)
            .attr("r", 10)
            .attr("fill", "none")
            .attr("stroke", "#FF9800")
            .attr("stroke-width", 2.5)
            .each(function (d) {
                const r = 10;
                const circ = 2 * Math.PI * r;
                const p = d.data.progress / 100;
                d3.select(this)
                    .attr("stroke-dasharray", circ)
                    .attr("stroke-dashoffset", circ * (1 - p));
            });

        // 点击 → 冒泡事件给 Controller
        nodes.on("click", (event, d) => {
            if (d.data.id) {
                this.trigger("node-clicked", { id: d.data.id });
            }
        });
    }
}
MindmapRenderer.template = "project_md.MindmapRenderer";