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package namespace
import (
"fmt"
"golang.org/x/exp/maps"
"github.com/authzed/spicedb/pkg/caveats"
caveattypes "github.com/authzed/spicedb/pkg/caveats/types"
core "github.com/authzed/spicedb/pkg/proto/core/v1"
"github.com/authzed/spicedb/pkg/schema"
)
// ValidateCaveatDefinition validates the parameters and types within the given caveat
// definition, including usage of the parameters.
func ValidateCaveatDefinition(ts *caveattypes.TypeSet, caveat *core.CaveatDefinition) error {
// Ensure all parameters are used by the caveat expression itself.
parameterTypes, err := caveattypes.DecodeParameterTypes(ts, caveat.ParameterTypes)
if err != nil {
return schema.NewTypeWithSourceError(
fmt.Errorf("could not decode caveat parameters `%s`: %w", caveat.Name, err),
caveat,
caveat.Name,
)
}
deserialized, err := caveats.DeserializeCaveatWithTypeSet(ts, caveat.SerializedExpression, parameterTypes)
if err != nil {
return schema.NewTypeWithSourceError(
fmt.Errorf("could not decode caveat `%s`: %w", caveat.Name, err),
caveat,
caveat.Name,
)
}
if len(caveat.ParameterTypes) == 0 {
return schema.NewTypeWithSourceError(
fmt.Errorf("caveat `%s` must have at least one parameter defined", caveat.Name),
caveat,
caveat.Name,
)
}
referencedNames, err := deserialized.ReferencedParameters(maps.Keys(caveat.ParameterTypes))
if err != nil {
return err
}
for paramName, paramType := range caveat.ParameterTypes {
_, err := caveattypes.DecodeParameterType(ts, paramType)
if err != nil {
return schema.NewTypeWithSourceError(
fmt.Errorf("type error for parameter `%s` for caveat `%s`: %w", paramName, caveat.Name, err),
caveat,
paramName,
)
}
if !referencedNames.Has(paramName) {
return schema.NewTypeWithSourceError(
NewUnusedCaveatParameterErr(caveat.Name, paramName),
caveat,
paramName,
)
}
}
return nil
}
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