const doSaveImage = (canvas: Canvas) => {
    wx.canvasToTempFilePath({
        canvas: canvas,
        fileType: 'png',
        quality: 1,
        success: (res) => {
            wx.saveImageToPhotosAlbum({
                filePath: res.tempFilePath,
                success: () => wx.showToast({
                    title: '保存成功，请在相册中查看',
                    icon: 'success',
                    duration: 2000,
                }),
                // fail: () => wx.showToast({
                //     title: '保存涂色卡失败，请重试！',
                //     icon: 'none',
                //     duration: 2000,
                // })
            });
        },
        fail: (err: any) => {
            wx.showToast({
                title: '生成涂色卡失败，请重试！',
                icon: 'none',
                duration: 2000,
            })
        }
    });
}

const requestPhotoPermission = (canvas: Canvas) => {
    wx.authorize({
        scope: 'scope.writePhotosAlbum',
        success: () => doSaveImage(canvas),
        fail: () => wx.showToast({
            title: '请在“设置-添加到相册”中开启相册权限以保存涂色卡',
            icon: 'none',
            duration: 3000,
        })
    })
}


export const checkAndSaveImage = (canvas: Canvas) => {
    wx.getSetting({
        success: res => {
            if (!res.authSetting['scope.writePhotosAlbum']) {
                requestPhotoPermission(canvas)
            } else {
                doSaveImage(canvas)
            }
        }
    })
};