"use strict";
import DataUtils,
{
    REQUEST_TYPE_GET,
    REQUEST_TYPE_PUT,
    REQUEST_TYPE_POST,
    REQUEST_TYPE_DELETE,
    CONTENT_TYPE_JSON,
    CONTENT_TYPE_FORM
}
from '../utilities/DataUtils';
import Dexie from 'dexie';
import * as DataEvent from '../events/DataEvent';
export var COUNT;
export var FINAL_KEY;
export default class DBUtils
{
    //--------------------------
    // constructor
    //--------------------------
    constructor()
    {
        this.dataUtils = new DataUtils();
        this.db = new Dexie("fipamo_posts");
        this.db.version(1).stores(
        {
            postList: 'id,post'
        });
        this.db.postList.toArray(array =>
        {
            COUNT = array.length;
            FINAL_KEY = array[COUNT - 1].id;
        })
    }
    //--------------------------
    // methods
    //--------------------------
    modify(id, postData)
    {
        let self = this;
        let freshID;
        return new Promise(function(resolve, reject)
        {
            if (id == null)
            {
                self.db.postList.put(postData).then(fresh =>
                {
                    freshID = fresh;
                }).catch(e =>
                {
                    let err = {
                        message: "PUT ERROR",
                        error: e
                    }
                });
            }
            else
            {
                self.db.postList.update(Number(id),
                {
                    post: postData
                }).then(updated =>
                {}).catch(e =>
                {
                    let err = {
                        message: "UPDATE ERROR",
                        error: e
                    }
                });
            }
            self.db.postList.toArray(array =>
            {
                self.syncRemote(array, freshID).then(response =>
                {
                    resolve(
                    {
                        response
                    })
                }).catch(err =>
                {
                    reject(
                    {
                        err
                    });
                });
            })
        })
    }
    syncLocal(array)
    {
        let self = this;
        return new Promise(function(resolve, reject)
        {
            self.db.postList.clear().then(result =>
            {
                self.db.postList.bulkAdd(array).then(key =>
                {
                    self.db.postList.toArray(array =>
                    {
                        let event = DataEvent.LOCAL_DB_READY
                        resolve(
                        {
                            event
                        })
                    })
                }).catch(Dexie.BulkError, e =>
                {
                    reject(
                    {
                        e
                    })
                })
            })
        })
    }
    syncRemote(db, newPostId)
    {
        let self = this;
        return new Promise(function(resolve, reject)
        {
            self.dataUtils.request('/api/post/sync', DataEvent.POSTS_SYNCED, REQUEST_TYPE_POST, CONTENT_TYPE_JSON, db).then((response) =>
            {
                let bounce = {
                    message: response,
                    newPost: newPostId
                }
                resolve(bounce)
            }).catch((err) =>
            {
                reject(err);
            })
        })
    }
    getPost(id)
    {
        let self = this;
        if (id == null)
        {
            return new Promise(function(resolve, reject)
            {
                self.db.postList.toArray(array =>
                {
                    resolve(array)
                }).catch(err =>
                {
                    reject(err)
                })
            })
        }
        else
        {
            return new Promise(function(resolve, reject)
            {
                self.db.postList.get(Number(id)).then(obj =>
                {
                    resolve(obj)
                }).catch(err =>
                {
                    reject(err)
                })
            })
        }
    }
    archivePost(id, archive)
    {
        let self = this;
        return new Promise(function(resolve, reject)
        {
            self.db.postList.update(Number(id),
            {
                post: archive
            }).then(deleted =>
            {
                self.db.postList.toArray(array =>
                {
                    self.syncRemote(array, null).then(response =>
                    {
                        resolve(
                        {
                            response
                        })
                    }).catch(err =>
                    {
                        reject(
                        {
                            err
                        });
                    });
                })
            }).catch(e =>
            {
                console.log("ERROR", e)
            });
        })
    }
    //--------------------------
    // event handlers
    //--------------------------
}