var ValidSchemaVersions = []string{
    "1.0",
}

type BuildOption struct {
    Name     string   `yaml:"name"`
    Packages []string `yaml:"packages"`
}

type EnvironmentFile struct {
    Environment map[string]string `yaml:"environment"`
}

type Function struct {
    // Name of deployed function
    Name     string `yaml:"-"`
    Language string `yaml:"lang"`

    // Handler Local folder to use for function
    Handler string `yaml:"handler"`

    // Image Docker image name
    Image string `yaml:"image"`

    // Docker registry Authorization
    RegistryAuth string `yaml:"registry_auth,omitempty"`

    FProcess string `yaml:"fprocess"`

    Environment map[string]string `yaml:"environment"`

    // Secrets list of secrets to be made available to function
    Secrets []string `yaml:"secrets"`

    SkipBuild bool `yaml:"skip_build"`

    Constraints *[]string `yaml:"constraints"`

    // EnvironmentFile is a list of files to import and override environmental variables.
    // These are overriden in order.
    EnvironmentFile []string `yaml:"environment_file"`

    Labels *map[string]string `yaml:"labels"`

    // Limits for function
    Limits *FunctionResources `yaml:"limits"`

    // Requests of resources requested by function
    Requests *FunctionResources `yaml:"requests"`

    // ReadOnlyRootFilesystem is used to set the container filesystem to read-only
    ReadOnlyRootFilesystem bool `yaml:"readonly_root_filesystem"`

    // BuildOptions to determine native packages
    BuildOptions []string `yaml:"build_options"`

    // Annotations
    Annotations *map[string]string `yaml:"annotations"`
}

type FunctionResources struct {
    Memory string `yaml:"memory"`
    CPU    string `yaml:"cpu"`
}

type LanguageTemplate struct {
    Language     string        `yaml:"language"`
    FProcess     string        `yaml:"fprocess"`
    BuildOptions []BuildOption `yaml:"build_options"`
    // WelcomeMessage is printed to the user after generating a function
    WelcomeMessage string `yaml:"welcome_message"`
}

type Provider struct {
    Name       string `yaml:"name"`
    GatewayURL string `yaml:"gateway"`
    Network    string `yaml:"network"`
}

type Services struct {
    Version   string              `yaml:"version,omitempty"`
    Functions map[string]Function `yaml:"functions,omitempty"`
    Provider  Provider            `yaml:"provider,omitempty"`
}