Date parsing error

[VictorPuga]

I am trying to generate a wallpaper using the "filename" "time" option, but when the JSONDecoder reads: "2021-02-17T13:00:00Z", I am getting the error: Date string does not match format expected by formatter. However, if the same date is 12 instead of 13 ("2021-02-17T12:00:00Z"), there is no problem.

[VictorPuga]

Im using v1.7.1

[mczachurski]

Unfortunately I cannot reproduce that bug. I'm using below JSON and everything is working. Can you provide more information (full log, swift version, os version etc.)?

[
    {
        "fileName": "1.png",
        "isPrimary": true,
        "time": "2021-02-17T04:00:00Z"
    },
    {
        "fileName": "2.png",
        "time": "2021-02-17T05:00:00Z"
    },
    {
        "fileName": "3.png",
        "time": "2021-02-17T06:00:00Z"
    },
    {
        "fileName": "4.png",
        "time": "2021-02-17T07:00:00Z"
    },
    {
        "fileName": "5.png",
        "time": "2021-02-17T08:00:00Z"
    },
    {
        "fileName": "6.png",
        "time": "2021-02-17T10:00:00Z"
    },
    {
        "fileName": "7.png",
        "time": "2021-02-17T12:00:00Z"
    },
    {
        "fileName": "8.png",
        "time": "2021-02-17T13:00:00Z"
    },
    {
        "fileName": "8.png",
        "time": "2021-02-17T15:00:00Z"
    },
    {
        "fileName": "9.png",
        "time": "2021-02-17T16:00:00Z"
    },
    {
        "fileName": "10.png",
        "time": "2021-02-17T17:00:00Z"
    },
    {
        "fileName": "11.png",
        "time": "2021-02-17T18:00:00Z"
    },
    {
        "fileName": "12.png",
        "time": "2021-02-17T19:00:00Z"
    },
    {
        "fileName": "13.png",
        "time": "2021-02-17T20:00:00Z"
    },
    {
        "fileName": "14.png",
        "time": "2021-02-17T21:00:00Z"
    },
    {
        "fileName": "15.png",
        "time": "2021-02-17T22:00:00Z"
    },
    {
        "fileName": "16.png",
        "time": "2021-02-17T23:00:00Z"
    }
]

[VictorPuga]

Same issue with the JSON above. I will try to provide some information

• OS: macOS 11.2.1 (M1 Mac)
• Instalation: Homebrew
• wallpapper version: 1.7.1
• swiftc version: Apple Swift version 5.3.2 (swiftlang-1200.0.45 clang-1200.0.32.28) Target: arm64-apple-darwin20.3.0
• Log:

Reading JSON file: 'file:///Users/(...)/sample.json'...OK.
Decoding JSON file...Error: Unexpected error occurs: 
dataCorrupted(Swift.DecodingError.Context(codingPath: [_JSONKey(stringValue: "Index 7", intValue: 7), 
CodingKeys(stringValue: "time", intValue: nil)], debugDescription: "Date string does not match format 
expected by formatter.", underlyingError: nil))

• JSON file: example from above

[y-neck]

I have got exactly the same problem (same error log).

[eduarbo]

I had the same issue, apparently the parser breaks when you set the time format to 12-Hour in System Preferences. As a workaround try enabling the 24-Hour format temporarily while running the command.

[patrickhoette]

I solved this issue by changing line 40 of Program.swift to:

formatter.dateFormat = "hh:mm a"

and then used the following in my JSON:

[
    {
        "fileName": "light.jpg",
        "isPrimary": true,
        "isForLight": true,
        "time": "08:30 AM"
    },
    {
        "fileName": "dark.jpg",
        "isForDark": true,
        "time": "06:00 PM"
    }
]

This doesn't fundamentally fix the issue though, this just made it work with 12h formatted time. In case anyone is interested in a more permanent fix to the issue. This will mean making the change yourself and compiling the code but thats simple enough. Instructions are in the readme.