csamsclient/foreground/src/main/java/com/gyf/csams/activity/model/ActivityDetailViewModel.kt

package com.gyf.csams.activity.model

import androidx.lifecycle.LiveData
import androidx.lifecycle.MutableLiveData
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import com.gyf.csams.NOT_IMPL_TIP
import com.gyf.csams.uikit.*
import com.gyf.csams.util.randomChinese
import com.gyf.csams.util.randomDateTime
import com.gyf.csams.util.randomNum
import com.orhanobut.logger.Logger
import kotlinx.coroutines.launch
import java.util.*

/**
 * 活动详情菜单通用状态
 *
 */
class ActivityDetailViewModel : ViewModel(), TopMenuInterface<ActivityDetailMenu> {
    override val _currentMenu: MutableLiveData<ActivityDetailMenu> = MutableLiveData()
    override val currentMenu: LiveData<ActivityDetailMenu> = _currentMenu
}

/**
 * TODO
 *
 * @property associationName 社团名字
 * @property activityName 活动名
 * @property activityTime 活动时间
 * @property activityLocation 活动地点
 * @property activityDesc 活动介绍
 */
data class ActivityDetailVo(
    val associationName: String, val activityName: String,
    val activityTime: Date, val activityLocation: String,
    val activityDesc: String
)


/**
 * 活动信息
 *
 */
class ActivityInfoViewModel : ViewModel() {
    private val _activityDetailVo = MutableLiveData<ActivityDetailVo>()
    val activityDetailVo: LiveData<ActivityDetailVo> = _activityDetailVo

    val like = "点赞"
    val collect = "收藏"

    init {
        loadInfo()
    }

    /**
     * TODO 点赞
     *
     * @param callback
     */
    fun like(callback: (message: String) -> Unit) {
        callback(NOT_IMPL_TIP)
    }

    /**
     * TODO 收藏
     *
     * @param callback
     */
    fun collect(callback: (message: String) -> Unit) {
        callback(NOT_IMPL_TIP)
    }

    private fun loadInfo() {
        viewModelScope.launch {
            _activityDetailVo.value = ActivityDetailVo(
                activityName = randomChinese(4),
                associationName = randomChinese(4),
                activityTime = randomDateTime(),
                activityLocation = randomChinese(3),
                activityDesc = randomChinese(500)
            )
        }

    }

}

/**
 * 图片
 * @property name 文件名
 * @property size 文件大小
 * @property url  文件路径
 * @property md5  文件hash
 * @property createTime 文件创建时间
 * @property studentId  文件上传人
 */
data class ActivityPhotoVo(
    val name: String,
    val size: Long,
    val url: String,
    val md5: String,
    val createTime: Date,
    val studentId: String
)

/**
 * 活动相册数据状态管理
 *
 */
class ActivityPhotoViewModel : ScrollList<ActivityPhotoVo>() {
    override val initSize: Int = 10

    init {
        load()
    }

    fun upload(callback: (message: String) -> Unit) {
        callback(NOT_IMPL_TIP)
    }

    /**
     * TODO 加载相册
     *
     */
    override fun load() {
        viewModelScope.launch {
            _data.value?.apply {
                repeat(initSize) {
                    add(
                        ActivityPhotoVo(
                            name = randomChinese(3),
                            size = randomNum(3).toLong(),
                            url = "",
                            md5 = "",
                            createTime = randomDateTime(),
                            studentId = ""
                        )
                    )
                }
            }
        }
    }


    /**
     * TODO 加载更多相册
     *
     * @param callback
     */
    override fun loadMore(callback: (message: String) -> Unit) {
        Logger.i("加载更多")
        viewModelScope.launch {
            _data.value?.apply {
                val list = mutableListOf<ActivityPhotoVo>()
                list.addAll(this)
                repeat(initSize) {
                    add(
                        ActivityPhotoVo(
                            name = randomChinese(3),
                            size = randomNum(3).toLong(),
                            url = "",
                            md5 = "",
                            createTime = randomDateTime(),
                            studentId = ""
                        )
                    )
                }
                _data.postValue(list)
                callback("成功加载更多相册")
            }
        }
    }
}

data class ActivityMemberVo(val studentId: String, val name: String)

data class ActivityMembersVo(
    val organizer: ActivityMemberVo,
    val participant: MutableList<ActivityMemberVo>?
)

class ActivityMemberViewModel : ScrollList<ActivityMemberVo>() {
    override val initSize: Int = 10

    private val _allMember = MutableLiveData<ActivityMembersVo>()
    val allMember: LiveData<ActivityMembersVo> = _allMember

    init {
        load()
    }

    /**
     * TODO 加载活动成员
     *
     */
    override fun load() {
        viewModelScope.launch {
            _data.value?.apply {
                repeat(initSize) {
                    add(ActivityMemberVo(studentId = randomNum(), name = randomChinese(3)))
                }
                _allMember.value = ActivityMembersVo(
                    organizer = ActivityMemberVo(
                        studentId = randomNum(),
                        name = randomChinese(3)
                    ), participant = _data.value
                )
            }
        }
    }

    /**
     * TODO 加载更多活动成员
     *
     * @param callback
     */
    override fun loadMore(callback: (message: String) -> Unit) {
        viewModelScope.launch {
            _data.value?.apply {
                val list = mutableListOf<ActivityMemberVo>()
                list.addAll(this)
                repeat(initSize) {
                    add(ActivityMemberVo(studentId = randomNum(), name = randomChinese(3)))
                }
                _allMember.value?.apply {
                    _data.postValue(list)
                    _allMember.postValue(
                        ActivityMembersVo(
                            organizer = organizer,
                            participant = list
                        )
                    )
                    callback("成功加载更多活动参与者")
                }
            }
        }
    }
}

data class BBSVo(val studentId: String, val name: String, val createTime: Date, val content: String)

/**
 * 交流区数据状态管理
 *
 */
class BBSViewModel : ScrollList<BBSVo>(), SendInterface {
    override val initSize: Int = 10

    val title = "发送评论"

    override val newContent = StringForm(formDesc = "评论内容", textLength = 80)

    override val _openDialog = MutableLiveData<Boolean>()
    override val openDialog: LiveData<Boolean> = _openDialog

    init {
        load()
    }


    override fun openDialog() {
        _openDialog.value = true
    }

    override fun closeDialog() {
        _openDialog.value = false
    }

    /**
     * TODO 发送评论
     *
     * @param callback
     */
    override fun send(callback: (message: String) -> Unit) {
        callback(NOT_IMPL_TIP)
    }

    /**
     * TODO 加载评论
     *
     */
    override fun load() {
        viewModelScope.launch {
            _data.value?.apply {
                repeat(initSize) {
                    add(
                        BBSVo(
                            studentId = randomNum(),
                            createTime = randomDateTime(),
                            content = randomChinese(50),
                            name = randomChinese(3)
                        )
                    )
                }
            }
        }
    }

    /**
     * TODO 加载更多评论
     *
     * @param callback
     */
    override fun loadMore(callback: (message: String) -> Unit) {
        viewModelScope.launch {
            _data.value?.apply {
                repeat(initSize) {
                    val list = mutableListOf<BBSVo>()
                    list.addAll(this)
                    repeat(initSize) {
                        add(
                            BBSVo(
                                studentId = randomNum(),
                                name = randomChinese(3),
                                createTime = randomDateTime(),
                                content = randomChinese(50)
                            )
                        )
                    }
                    _data.postValue(list)
                    callback("成功加载更多评论")
                }
            }
        }
    }
}