import { getNoteMetaNew } from "@/api/note";
import VueRouter from "vue-router";
import EditNote from "@/views/EditNote.vue";
import ViewNote from "@/views/ViewNote.vue";
import ErrorNote from "@/views/ErrorNote.vue";
import storage from "@/libs/storage";
import { getStoreKey } from "@/api/lock";


export default function getRouter() {
    let path = location.pathname;
    let key = path.substring(1, path.length);
    //let errorMeta = null;

    if (path == "/") {
        //errorMeta = 100002;
        return errorRouter(100002);
    }

    let keyMeta = storage.session.getObject("keyMeta");

    let regKey = /^[abcdefhikmnopqstuvwxyz23456789]{16}$/;

    if (!regKey.test(key)) {
        return errorRouter(100002);
    }

    if (keyMeta && keyMeta.key) {
        // if(document.referrer=="/"){
        // }
        return noteRouter(EditNote, keyMeta, null);
    }

    return getNoteMetaNew(key).then(function (resp) {
        if (null == resp || null == resp.data) {
            return errorRouter(100006);
        }

        let result = resp.data;
        if (result.code != '000000') {
            return errorRouter(parseInt(result.code));
        }

        let noteMeta = result.data;
        if (null == noteMeta) {
            return errorRouter(100001);
        }
        if (null == noteMeta.key) {
            return errorRouter(100002);
        }

        //view
        if (1 == noteMeta.state) {
            return noteRouter(ViewNote, keyMeta, noteMeta);
        }

        //deleted
        if (0 == noteMeta.state) {
            let storeKey = getStoreKey(key);
            storage.local.delete(storeKey);
            // user deleted
            if (noteMeta.ttl > 0) {
                // errorMeta = 100003;
                return errorRouter(100003);
            } else {// timeout
                // errorMeta = 100004;
                return errorRouter(100004);
            }
        }

        //edit or unsubmitted
        if (null == noteMeta.state) {
            let storeKey = getStoreKey(key);
            return storage.local.getText(storeKey).then(function (storeInfo) {
                //if has storage , then edit
                if (null != storeInfo) {
                    return noteRouter(EditNote, keyMeta, noteMeta);
                }

                //storage is empty 
                let df = storage.session.getText(storeKey + "_delete")
                if (df) {//unsubmitted,user deleted.
                    // errorMeta = 100003;
                    return errorRouter(100003);
                } else {//unsubmitted
                    // errorMeta = 100005;
                    return errorRouter(100005);
                }
            });
        }
    });

}

function noteRouter(noteView, keyMeta, noteMeta) {
    const routes = [
        {
            path: "/:name([a-z0-9]{10,20})",
            name: "note",
            component: noteView,
            meta: { keyMeta: keyMeta, noteMeta: noteMeta },
        }
    ];

    const router = new VueRouter({
        routes,
        mode: "history",
    });
    return router;
}


function errorRouter(errorCode) {
    const routes = [
        {
            path: "/error_:code([0-9]{6})",
            name: "error",
            component: ErrorNote,
            errorMeta: errorCode
        }
    ];

    const router = new VueRouter({
        routes,
        mode: "history",
    });
    return router;
}