package db

import (
    "database/sql"
    "log"

    _ "github.com/mattn/go-sqlite3"
)

type MediaItem struct {
    mediaID     int
    userID      int
    EXIFDate    string
    uploadDate  string
    latitude    string
    longitude   string
    mediaType   int
    relPath     string
}

func init() {
    // Initialize DB
}

func ItemsFromAlbum(userID int, albumID int) []MediaItem {
    database, _ := sql.Open("sqlite3", "./db/imagini.db")
    rows, _ := database.Query(`
        SELECT
            MediaItems.*
        FROM
            MediaAlbums
        INNER JOIN MediaItems ON MediaAlbums.mediaID = MediaItems.mediaID
        WHERE MediaAlbums.albumID = ? AND MediaItems.userID = ?`, albumID, userID)

    var matchingMediaItems []MediaItem
    var mi MediaItem
    for rows.Next() {
        err := rows.Scan(&mi.mediaID, &mi.userID, &mi.EXIFDate, &mi.uploadDate, &mi.latitude, &mi.longitude, &mi.mediaType, &mi.relPath)
        if err != nil {
            log.Fatal(err)
        }
        matchingMediaItems = append(matchingMediaItems, mi)
    }
    rows.Close()
    return matchingMediaItems
}

func ItemsFromTags(userID int, tagID int) []MediaItem {
    database, _ := sql.Open("sqlite3", "./db/imagini.db")
    rows, _ := database.Query(`
        SELECT
            MediaItems.*
        FROM
            MediaTags
        INNER JOIN MediaItems ON MediaTags.mediaID = MediaItems.mediaID
        WHERE MediaTags.tagID = ? AND MediaItems.userID = ?`, tagID, userID)

    var matchingMediaItems []MediaItem
    var mi MediaItem
    for rows.Next() {
        err := rows.Scan(&mi.mediaID, &mi.userID, &mi.EXIFDate, &mi.uploadDate, &mi.latitude, &mi.longitude, &mi.mediaType, &mi.relPath)
        if err != nil {
            log.Fatal(err)
        }
        matchingMediaItems = append(matchingMediaItems, mi)
    }
    rows.Close()
    return matchingMediaItems
}

func IndexMediaItems(newItems []MediaItem) {
    database, _ := sql.Open("sqlite3", "./db/imagini.db")
    statement, _ := database.Prepare(`
        INSERT INTO MediaItems (
            userID,
            EXIFDate 
            uploadDate,
            latitude,
            longitude,
            mediaType,
            relPath
        ) VALUES (?, ?, ?, ?, ?, ?, ?, ?)`)
    for _, s := range newItems {
        statement.Exec(
            &s.userID,
            &s.EXIFDate,
            &s.uploadDate,
            &s.latitude,
            &s.longitude,
            &s.mediaType,
            &s.relPath,
        )
    }
    database.Close()
}