Configurable schema followups

[msbarry]

Master ticket to track followup tasks for #160 and #323:

expose planetiler functionality:

• [ ] #349
• [x] #350
• [ ] #351
• [ ] #348
• [ ] Allow custom inputs (match_key/match_value/or an expression) as input to a match expression
• [ ] Ensure attribute min size working as intended
• [x] #347

yaml config flexibility/ease of use:

• [ ] #352
• [ ] #353
• [ ] Expose all parsing functions to CEL/type coercions (wayzorder, round_int, long, double, bool, bool_int, directions, meters)
• [ ] Let configs use CEL expressions (almost) everywhere
• [ ] Let configs reference other files so we can break up schema/test logic
• [ ] Handle --only-layers and --include-layers arguments and limit the sources we process to only ones needed by those layers
• [ ] Let attributes reference the value of other attributes or temporary vars to avoid repeating logic
• [ ] Let features perform more complex manipulation on input feature geometries
• [ ] Clean-up include_when/exclude_when (use require/reject filters like imposm3 or maplibre layer filter?
• [ ] Keep track of parsing context for better error messages
• [ ] Regex matching for structured boolean expressions
• [ ] More forgiving CEL expressions (automatic coercion, null chaining, ...)
• [ ] Pretty-print symmetric diff from validation failures
• [ ] Try to avoid collisions more with automatic download file names
• [x] #233
• [x] #179

code cleanup

• [ ] Verify configurable schemas work from CI
• [ ] Format YAML in addition to java files with prettier
• [ ] Run json schema validation in java
• [ ] Rename Expression to BooleanExpression and MultiExpression to MatchExpression
• [x] Move TagValueProducer data types to an enum

[wipfli]

It is nice to have type hints when writing config. Maybe we could use something like https://github.com/aws/jsii to generate the yamls from typed languages like TypeScript?

[msbarry]

It is nice to have type hints when writing config. Maybe we could use something like https://github.com/aws/jsii to generate the yamls from typed languages like TypeScript?

I added json-schema definitions in #323 - you can use them in vscode by installing the YAML plugin then starting off a yaml file with:

# yaml-language-server: $schema=https://raw.githubusercontent.com/onthegomap/planetiler/main/planetiler-custommap/planetiler.schema.json