// interface MyJsonObject {
//   id: string;
//   name: string;
//   email: string;
// }
// Efficiently storing data in indexdb: https://stackoverflow.com/a/62975917
const postStoreName = "posts";
const tombStoneStoreName = "tombstones";
const followingStoreName = "following";
let keyBase = "dandelion_posts_v1_";
let key = "";
let version = 1;
function upgrade_0to1(db) {
    let postsStore = db.createObjectStore(postStoreName, { keyPath: "id", autoIncrement: true });
    postsStore.createIndex("datetimeIndex", "post_timestamp", { unique: false });
    postsStore.createIndex("postIDIndex", "data.post_id", { unique: true });
}
function upgrade_1to2(db) {
    let followingStore = db.createObjectStore(followingStoreName, { keyPath: "id", autoIncrement: true });
}
let upgrades = new Map([
    [0, upgrade_0to1],
    [1, upgrade_1to2]
]);
export function openDatabase(userID) {
    const dbName = `user_${userID}`;
    return new Promise((resolve, reject) => {
        const request = indexedDB.open(dbName, version);
        request.onerror = (event) => {
            const errorEvent = event;
            reject(`Database error: ${errorEvent.target.error?.message}`);
        };
        request.onupgradeneeded = (event) => {
            const db = event.target.result;
            let upgradeFunction = upgrades.get(event.oldVersion);
            if (!upgradeFunction) {
                throw new Error(`db: Don't have an upgrade function to go from version ${event.oldVersion} to version ${event.newVersion}`);
            }
            upgradeFunction(db);
        };
        request.onsuccess = (event) => {
            const db = event.target.result;
            resolve(db);
        };
    });
}
async function getDBTransactionStore(userID, mode = "readonly") {
    const db = await openDatabase(userID);
    const transaction = db.transaction(postStoreName, mode);
    const store = transaction.objectStore(postStoreName);
    return { db, transaction, store };
}
export async function addData(userID, data) {
    try {
        const { db, transaction, store } = await getDBTransactionStore(userID, "readwrite");
        const addRequest = store.add({ post_timestamp: data.post_timestamp, data: data });
        addRequest.onsuccess = (e) => {
            // console.log('Data has been added:', (e.target as IDBRequest).result);
        };
        addRequest.onerror = (event) => {
            // Use a type assertion to access the specific properties of IDBRequest error event
            const errorEvent = event;
            console.error('Error in adding data:', errorEvent.target.error?.message);
        };
    }
    catch (error) {
        console.error('Error in opening database:', error);
    }
}
export async function deleteData(userID, postID) {
    try {
        const { db, transaction, store } = await getDBTransactionStore(userID, "readwrite");
        const index = store.index("postIDIndex");
        const getRequest = index.getKey(postID);
        getRequest.onerror = e => console.log(e.target.error);
        getRequest.onsuccess = e => {
            const key = e.target.result;
            if (key === undefined) {
                console.error("Post not found");
                return null;
            }
            const deleteRequest = store.delete(key);
            deleteRequest.onerror = e => { console.error(e.target.error); return false; };
            deleteRequest.onsuccess = () => true;
        };
    }
    catch (error) {
        console.error('Error in opening database:', error);
    }
}
export async function clearData(userID) {
    try {
        const { db, transaction, store } = await getDBTransactionStore(userID, "readwrite");
        const clearRequest = store.clear();
        clearRequest.onsuccess = (e) => {
            // console.log('Data has been added:', (e.target as IDBRequest).result);
        };
        clearRequest.onerror = (event) => {
            // Use a type assertion to access the specific properties of IDBRequest error event
            const errorEvent = event;
            console.error('Error in clearing data:', errorEvent.target.error?.message);
        };
    }
    catch (error) {
        console.error('Error in opening database:', error);
    }
}
export async function addDataArray(userID, array) {
    try {
        const { db, transaction, store } = await getDBTransactionStore(userID, "readwrite");
        transaction.onerror = (event) => {
            console.error('Error in adding data:', event);
        };
        // let count = 0;
        array.reverse();
        for (let data of array) {
            const addRequest = store.add({ post_timestamp: data.post_timestamp, data: data });
            // addRequest.onsuccess = (e: Event) => {
            //     // console.log('Data has been added:', (e.target as IDBRequest).result);
            // };
            // addRequest.onerror = (event: Event) => {
            //     // Use a type assertion to access the specific properties of IDBRequest error event
            //     const errorEvent = event as IDBRequestEvent;
            //     console.error('Error in adding data:', errorEvent.target.error?.message);
            // };
            // count++;
            // if (count % 100 === 0) {
            //     console.log(`Added ${count} posts...`);
            // }
        }
    }
    catch (error) {
        console.error('Error in opening database:', error);
    }
}
export async function checkPostIds(userID, post_ids) {
    try {
        const { db, transaction, store } = await getDBTransactionStore(userID);
        const index = store.index("postIDIndex");
        transaction.oncomplete = () => {
            // console.log("Transaction completed successfully");
            db.close();
        };
        transaction.onerror = (event) => {
            console.error("Transaction error:", event.target.error);
            db.close();
        };
        let postIdsNeeded = [];
        for (let id of post_ids) {
            try {
                let havePost = await new Promise((resolve, reject) => {
                    const getRequest = index.getKey(id);
                    getRequest.onerror = (e) => {
                        console.log(e.target.error);
                        reject(e);
                    };
                    getRequest.onsuccess = async (e) => {
                        const key = e.target.result;
                        resolve(key !== undefined);
                    };
                });
                // console.log(post.post_id, havePost);
                if (!havePost) {
                    postIdsNeeded.push(id);
                }
            }
            catch (error) {
                console.error("Error processing post:", error);
            }
        }
        console.log(`checkPostIds need ${postIdsNeeded.length} posts`);
        return postIdsNeeded;
    }
    catch (error) {
        console.error("Error in opening database:", error);
    }
}
export async function mergeDataArray(userID, array) {
    try {
        const { db, transaction, store } = await getDBTransactionStore(userID, "readwrite");
        const index = store.index("postIDIndex");
        transaction.oncomplete = () => {
            // console.log("Transaction completed successfully");
            db.close();
        };
        transaction.onerror = (event) => {
            console.error("Transaction error:", event.target.error);
            db.close();
        };
        let postsToWrite = [];
        for (let post of array) {
            try {
                let havePost = await new Promise((resolve, reject) => {
                    const getRequest = index.getKey(post.post_id);
                    getRequest.onerror = (e) => {
                        console.log(e.target.error);
                        reject(e);
                    };
                    getRequest.onsuccess = async (e) => {
                        const key = e.target.result;
                        resolve(key !== undefined);
                    };
                });
                // console.log(post.post_id, havePost);
                if (!havePost) {
                    postsToWrite.push(post);
                }
            }
            catch (error) {
                console.error("Error processing post:", error);
            }
        }
        console.log(`Writing ${postsToWrite.length} posts`);
        await addDataArray(userID, postsToWrite);
    }
    catch (error) {
        console.error("Error in opening database:", error);
    }
}
export async function getPostForUser(userID, postID) {
}
export async function getData(userID, lowerID, upperID) {
    const { store } = await getDBTransactionStore(userID);
    const keyRangeValue = IDBKeyRange.bound(lowerID, upperID);
    const index = store.index("datetimeIndex");
    return new Promise((resolve, reject) => {
        const getAllRequest = index.getAll(keyRangeValue);
        getAllRequest.onsuccess = () => {
            const records = getAllRequest.result.map((item) => item.data);
            resolve(records);
        };
        getAllRequest.onerror = () => {
            console.error('Transaction failed:', getAllRequest.error?.message);
            reject(getAllRequest.error);
        };
    });
}
export async function getAllData(userID) {
    const { store } = await getDBTransactionStore(userID);
    return new Promise((resolve, reject) => {
        const getRequest = store.getAll();
        getRequest.onsuccess = () => {
            if (getRequest.result) {
                //   console.log('Retrieved data:', getRequest.result.jsonData);
                // resolve(getRequest.result.jsonData as any);
                resolve(getRequest.result);
            }
            else {
                console.log('No data record found for key', key);
                resolve(undefined); // explicitly resolve with undefined when no data is found
            }
        };
        getRequest.onerror = (event) => {
            // Use a type assertion to access the specific properties of IDBRequest error event
            const errorEvent = event;
            console.error('Transaction failed:', errorEvent.target.error?.message);
            reject(errorEvent.target.error); // reject the promise if there's an error
        };
    });
}
export async function getAllIds(userID) {
    const { store } = await getDBTransactionStore(userID);
    const index = store.index("postIDIndex");
    let keys = [];
    return new Promise((resolve, reject) => {
        let request = index.openKeyCursor();
        request.onsuccess = (event) => {
            let cursor = event.target.result;
            if (cursor) {
                keys.push(cursor.key);
                cursor.continue();
            }
            else {
                resolve(keys);
            }
        };
        request.onerror = (event) => {
            reject(event);
        };
    });
}
export async function getPostsByIds(userID, postIDs) {
    const { store } = await getDBTransactionStore(userID);
    const index = store.index("postIDIndex");
    let posts = [];
    for (const postID of postIDs) {
        const post = await new Promise((resolve, reject) => {
            let request = index.get(postID);
            request.onsuccess = (event) => {
                resolve(event.target.result); // Resolve with the post
            };
            request.onerror = (event) => {
                reject(event); // Reject if any error occurs
            };
        });
        if (post) {
            posts.push(post); // Add the post to the result array if found
        }
    }
    return posts; // Return the array of posts
}
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