import im from "@/utils/im/index.js"

export default {
    state: {
        friends: {},
        sender: {},
    },
    getters: {
        friends(state) {
            return state.friends
        },
        userInfo: (state) => (targetId) => {
            if (state.friends[targetId]) {
                const info = state.friends[targetId]

                return {
                    userId: info.userId,
                    name: info.name,
                    portraitUrl: info.localAvatar ? info.localAvatar : require('@/static/user/cover.png')
                }
            } else {
                return {
                    userId: '',
                    name: '',
                    portraitUrl: ''
                }
            }
        },
        sender(state) {
            return state.sender
        }
    },
    mutations: {
        updateFriendInfo(state, userInfo) {
            Vue.set(state.friends, userInfo.userId, userInfo)
        },
        SET_state_sender(state, userInfo) {
            state.sender = userInfo
        }
    },
    actions: {
        setSenderInfo({
            commit
        }, userInfo) {
            commit('SET_state_sender', userInfo)
        },
        // 载入好友信息
        launchFriend({
            commit
        }, data) {
            commit('updateFriendInfo', data)
        },
        // 更新好友信息，这个时候要校验hash值了
        updateFriend({
            commit
        }, userInfo) {
            const model = uni.model.friendModel
            model.find('userId=' + userInfo.userId, (err, result) => {
                if (userInfo.hash != result[0].hash) {
                    commit('updateFriendInfo', userInfo)
                    console.log(userInfo);
                    if (userInfo.portraitUrl && userInfo.portraitUrl != result[0].portraitUrl) {
                        saveAvatar(userInfo, (savedFilePath) => {
                            const info = {
                                userId: userInfo.userId,
                                name: userInfo.name,
                                hash: userInfo.hash,
                                portraitUrl: userInfo.portraitUrl,
                                localAvatar: savedFilePath
                            }
                            model.update('userId=' + userInfo.userId, info, (err, res) => {
                                console.log('保存结果', err, res);
                            })
                            commit('updateFriendInfo', info)
                        })
                    } else {
                        const info = {
                            userId: userInfo.userId,
                            name: userInfo.name,
                            hash: userInfo.hash,
                            portraitUrl: userInfo.portraitUrl,
                            localAvatar: result[0].localAvatar
                        }
                        model.update('userId=' + userInfo.userId, info, (err, res) => {
                            console.log('保存结果', err, res);
                        })
                    }
                } else {
                    console.log('不用更新的用户', userInfo.userId, userInfo.name);
                }
            })
        },
        // 初始化好友信息
        initFriend({
            commit
        }, userInfo) {
            // 将好友信息保存到vuex的内存中，方便立即使用
            commit('updateFriendInfo', userInfo)
            const model = uni.model.friendModel
            // 用户头像，是否需要下载到本地
            if (userInfo.portraitUrl) {
                saveAvatar(userInfo, (savedFilePath) => {
                    const info = {
                        userId: userInfo.userId,
                        name: userInfo.name,
                        hash: userInfo.hash,
                        portraitUrl: userInfo.portraitUrl,
                        localAvatar: savedFilePath
                    }
                    model.insert(info, (err, res) => {
                        console.log('保存结果', err, res);
                    })
                    // 保存头像后，更新信息
                    commit('updateFriendInfo', info)
                })
            } else {
                // 直接将信息，写入数据库
                const info = {
                    userId: userInfo.userId,
                    name: userInfo.name,
                    hash: userInfo.hash,
                    portraitUrl: userInfo.portraitUrl,
                    localAvatar: ''
                }
                model.insert(info, (err, res) => {
                    console.log('保存结果', err, res);
                })
            }
        }
    }
}

const saveAvatar = (userInfo, callback) => {
    uni.downloadFile({
        url: userInfo.portraitUrl,
        success: ({
            tempFilePath
        }) => {
            uni.saveFile({
                tempFilePath: tempFilePath,
                success: ({
                    savedFilePath
                }) => {
                    callback(savedFilePath)
                }
            })
        },
        fail: (err) => {
            console.log('头像保存失败', err);
        }
    })
}