import froca from "../../../services/froca.js";
import ViewMode, { type ViewModeArgs } from "../view_mode.js";
import { createGrid, AllCommunityModule, ModuleRegistry, GridOptions } from "ag-grid-community";
import { setLabel } from "../../../services/attributes.js";
import getPromotedAttributeInformation, { buildData, TableData } from "./data.js";
import applyHeaderCustomization from "./header-customization.js";
import server from "../../../services/server.js";
import type { GridApi, GridState } from "ag-grid-community";
import SpacedUpdate from "../../../services/spaced_update.js";
import branches from "../../../services/branches.js";

const TPL = /*html*/`
<div class="table-view">
    <style>
    .table-view {
        overflow: hidden;
        position: relative;
        height: 100%;
        user-select: none;
        padding: 10px;
    }

    .table-view-container {
        height: 100%;
    }

    .search-result-widget-content .table-view {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
    }
    </style>

    <div class="table-view-container"></div>
</div>
`;

export interface StateInfo {
    gridState: GridState;
}

export default class TableView extends ViewMode<StateInfo> {

    private $root: JQuery<HTMLElement>;
    private $container: JQuery<HTMLElement>;
    private args: ViewModeArgs;
    private spacedUpdate: SpacedUpdate;
    private api?: GridApi;

    constructor(args: ViewModeArgs) {
        super(args, "table");

        this.$root = $(TPL);
        this.$container = this.$root.find(".table-view-container");
        this.args = args;
        this.spacedUpdate = new SpacedUpdate(() => this.onSave(), 5_000);
        args.$parent.append(this.$root);

        ModuleRegistry.registerModules([ AllCommunityModule ]);
    }

    get isFullHeight(): boolean {
        return true;
    }

    async renderList() {
        this.$container.empty();
        this.renderTable(this.$container[0]);
        return this.$root;
    }

    private async renderTable(el: HTMLElement) {
        const { noteIds, parentNote } = this.args;
        const notes = await froca.getNotes(noteIds);

        const info = getPromotedAttributeInformation(parentNote);
        const viewStorage = await this.viewStorage.restore();
        const initialState = viewStorage?.gridState;

        this.api = createGrid(el, {
            ...buildData(parentNote, info, notes),
            ...setupEditing(),
            ...setupDragging(),
            initialState,
            async onGridReady(event) {
                applyHeaderCustomization(el, event.api);
            },
            onStateUpdated: () => this.spacedUpdate.scheduleUpdate()
        });
    }

    private onSave() {
        if (!this.api) {
            return;
        }

        this.viewStorage.store({
            gridState: this.api.getState()
        });
    }

}

function setupEditing(): GridOptions<TableData> {
    return {
        onCellValueChanged(event) {
            if (event.type !== "cellValueChanged") {
                return;
            }

            const noteId = event.data.noteId;
            const name = event.colDef.field;
            if (!name) {
                return;
            }

            const { newValue } = event;
            if (name === "title") {
                // TODO: Deduplicate with note_title.
                server.put(`notes/${noteId}/title`, { title: newValue });
            }

            if (name.startsWith("labels.")) {
                const labelName = name.split(".", 2)[1];
                setLabel(noteId, labelName, newValue);
            }
        }
    }
}

function setupDragging() {
    return {
        onRowDragEnd(e) {
            const fromIndex = e.node.rowIndex;
            const toIndex = e.overNode?.rowIndex;
            console.log(fromIndex, toIndex);
            if (fromIndex === null || toIndex === null || toIndex === undefined || fromIndex === toIndex) {
                return;
            }

            const isBelow = (toIndex > fromIndex);
            const fromBranchId = e.node.data?.branchId;
            const toBranchId = e.overNode?.data?.branchId;
            if (fromBranchId === undefined || toBranchId === undefined) {
                return;
            }

            if (isBelow) {
                console.log("Move below", fromIndex, toIndex);
                branches.moveAfterBranch([ fromBranchId ], toBranchId);
            } else {
                console.log("Move above", fromIndex, toIndex);
                branches.moveBeforeBranch([ fromBranchId ], toBranchId);
            }
        }
    };
}