learning - Dhall

2022-03-03 04:47:19

I'm trying to wrap my head around dhall. I'm trying to create a function and I'm not entirely sure how I'm messing it up. Any tips please?
I'm trying to create this yaml

        - check: this.content == "/commands"
          processors:
            - bloblang: |
                let commands = [
                  "/commands",
                  "/joke",
                  "/roast",
                  "/release",
                ]
                root = "My commands are: " + $commands.join(", ")

With this dhall

let processorWithArgs =
    \(checkArg: Text) ->
    \(args: List) ->
    \(message: Text) ->
    { check = "this.content == \"/${checkArg}\""
    , processors =
        { bloblang = "let $checkArg = ${args}"
        , root = message
        }
    }

in [ processorWithArgs "commands"
   , [ "/commands",
    "/joke",
    "/roast",
    "/release",
    ]
    , "My commands are: \" + $commands.join(\", \")" ]

But I'm getting this output

Error: Invalid function input

 3│     \(args: List) ->
 4│     \(message: Text) ->
 5│     { check = "this.content == \"/${checkArg}\""
 6│     , processors =
 7│     { bloblang = "let $checkArg = ${args}"
 8│     , root = message
 9│     }
10│     }
11│

processor.dhall:3:5

James D.

2022-03-03 04:55:54

Its looking like it doesn't like the List time for args. I guess I need to figure out how to map a list to the Text

James D.

2022-03-03 05:09:22

So right now i'm at

let processorWithArgs =
    \(checkArg: Text) ->
    \(args: Text) ->
    \(message: Text) ->
    {
        check = "this.content == \"/${checkArg}\""
        , processors = {
            bloblang = "let ${checkArg} = ${args}"
            , root = message
        }
    }

in [ processorWithArgs "commands"  "\"/commands\", \"/joke\", \"/roast\", \"/release\","  "My commands are: \" + $commands.join(\", \")" ]

And that gets me

- check: "this.content == \"/commands\""
  processors:
    bloblang: "let commands = \"/commands\", \"/joke\", \"/roast\", \"/release\","
    root: "My commands are: \" + $commands.join(\", \")"

which is close. But its putting the escaped quotes in the yaml

James D.

2022-03-03 05:20:17

So to start with, I was reading my yaml wrong. bloblang on down is one big text field

let processorWithArgs =
    \(checkArg: Text) ->
    \(message: Text) ->
    {
        check = "this.content == \"/${checkArg}\""
        , processors = {
            bloblang = "let ${checkArg} = ${message}"
        }
    }

in [ processorWithArgs "commands"  ''
        let commands = [
            "/commands",
            "/joke",
            "/roast",
            "/release",
        ]
        root = "My commands are: " + $commands.join(", ")''
    ]

gives me

- check: "this.content == \"/commands\""
  processors:
    bloblang: |
      let commands = let commands = [
          "/commands",
          "/joke",
          "/roast",
          "/release",
      ]
      root = "My commands are: " + $commands.join(", ")

So now I just need to understand how not to return those escaped quotes on the first line.

TheMatten

2022-03-03 22:04:08

I guess it sanitizes your output on purpose to make it safe
May it be that the resulting YAML will still work though?

James D.

2022-03-04 15:47:56

So, I got past that. Now I have this weird thing where switch should be - switch but its not. https://gist.github.com/JamesAtTensure/91c07a2d412dee4d793eb5fb985ab990#file-output-yaml-L15