{{define "cenum"}}
typedef enum {
{{- range .Entries }}
    {{ .Name }} = {{ printf "0x%X" .ID }},
{{- end }}
} {{.EnumName}};
{{end}}

{{define "payloads"}}
{{- range . }}
typedef struct {
    {{- if not .Entries}}
    // empty payload
    {{- end}}
    {{- range .Entries }}
    {{- if (.ArrayLength) }}
    {{.DataType}} {{.Name}}[{{.ArrayLength}}];
    {{- else }}
    {{.DataType}} {{.Name}};
    {{- end}}
    {{- end }}
} {{ .Name }}Payload;
{{end}}
{{- end}}

{{define "union"}}
typedef union {
    {{- range .}}
    {{.Name}}Payload {{ .Name | snake}};
    {{- end }}
} PayloadUnion;
{{end}}

{{define "basemessage"}}
typedef struct {
    uint8_t Version;
    {{.CenumPCTOESP.EnumName}} MessageID;
    uint8_t Length;
    PayloadUnion Payload;
} PCTOESPBaseMessage;

typedef struct {
    uint8_t Version;
    {{.CenumESPTOPC.EnumName}} MessageID;
    uint8_t Length;
    PayloadUnion Payload;
} ESPTOPCBaseMessage;
{{end}}

{{define "handler"}}
{{- range . }}
void (*on_{{ .Name | snake }})({{ .Name }}Payload*);
{{- end}}
{{end}}

{{define "dispatcher"}}
void dispatch_message(uint8_t msg_id, void *payload) {
    switch (msg_id) {
        {{- range . }}
        case {{ .Name }}:
            if (on_{{ .Name | snake }}) on_{{ .Name | snake }}(({{ .Name }}Payload*)payload);
            break;
        {{- end }}
        default:
            // Unknown message
            break;
    }
}
{{end}}

{{define "send_function_prototype"}}
void send_message(ESP_TO_PC_MESSAGE_IDS msgid, PayloadUnion *payload);
{{end}}

{{define "send_function_source"}}
void send_message(ESP_TO_PC_MESSAGE_IDS msgid, PayloadUnion *payload) {}
{{end}}

{{define "send_functions_prototype"}}
{{- range .}}
{{- $argLen := len .Payload }}
void send_{{.Name | snake}}({{- range $i, $p := .Payload}}{{$p.DataType}} {{ if .ArrayLength}}*{{end}}{{$p.Name}} {{- if not (isLast $argLen $i) }}, {{ end}} {{- end}});
{{- end }}
{{end}}

{{define "send_functions_source"}}
{{- range .}}
{{- $argLen := len .Payload }}
void send_{{.Name | snake}}({{- range $i, $p := .Payload}}{{$p.DataType}} {{ if .ArrayLength}}*{{end}}{{$p.Name}} {{ if not (isLast $argLen $i) }}, {{ end}} {{- end}}) {
    {{.Name}}Payload payload;

    // Payload-Daten zuweisen
    {{- range .Payload}}
    {{- if .ArrayLength }}
    memcpy(payload.{{.Name}}, {{.Name}}, {{.ArrayLength}});
    {{- else }}
    payload.{{.Name}} = {{.Name}};
    {{- end}}
    {{- end}}

    // Nachricht senden
    send_message({{.Name}}, (PayloadUnion *)&payload);
}
{{end}}
{{end}}