#915 Add commands and procedures to procedure creation

Adds the possibility to create a procedure with commands and other
procedures integrated as steps.

Note: "steps" parameter is optional and "steps" array object order
defines execution order.

Request:
POST /procedure/add
{
  "center": "1",
  "name": "procedure",
  "description": "My procedure",
  "steps": [
             {
               "command": "wol",
               "params": { "type": "broadcast" }
             },
             {
               "procedure": 22
             },
             {
               "command": "poweroff",
               "params": {}
             }
           ]
}

Response:
200 OK

This commit also updates unit tests for /procedure/add POST method to
include steps.

3 files changed, 172 insertions, 3 deletions

diff --git a/src/json.c b/src/json.c
index a2b300f..3765782 100644
--- a/src/json.c
+++ b/src/json.c
@@ -140,3 +140,75 @@ int og_json_parse_partition(json_t *element, struct og_partition *part,
 
 	return err;
 }
+
+static int og_json_parse_procedure_cmd(json_t *element, int position,
+				       struct og_procedure *proc)
+{
+	struct og_procedure_step *step;
+	uint32_t err = 0;
+	const char *key;
+	json_t *value;
+
+	step = &proc->steps[proc->num_steps++];
+	step->type = OG_STEP_COMMAND;
+	step->position = position;
+
+	json_object_foreach(element, key, value) {
+		if (!strcmp(key, "command"))
+			err = og_json_parse_string(value, &step->cmd.type);
+		else if (!strcmp(key, "params"))
+			step->cmd.json = value;
+		else
+			return -1;
+	}
+
+	return err;
+}
+
+static int og_json_parse_procedure_call(json_t *element, int position,
+					struct og_procedure *proc)
+{
+	struct og_procedure_step *step;
+	uint32_t err = 0;
+	const char *key;
+	json_t *value;
+
+	step = &proc->steps[proc->num_steps++];
+	step->type = OG_STEP_PROCEDURE;
+	step->position = position;
+
+	json_object_foreach(element, key, value) {
+		if (!strcmp(key, "procedure"))
+			err = og_json_parse_uint64(value, &step->procedure.id);
+		else
+			return -1;
+	}
+
+	return err;
+}
+
+int og_json_parse_procedure(json_t *element, struct og_procedure *proc)
+{
+	unsigned int i;
+	json_t *item;
+	int err = 0;
+
+	if (json_typeof(element) != JSON_ARRAY)
+		return -1;
+
+	for (i = 0; i < json_array_size(element) && i < OG_PROCEDURE_STEPS_MAX; ++i) {
+		item = json_array_get(element, i);
+
+		if (json_object_get(item, "command"))
+			err = og_json_parse_procedure_cmd(item, i, proc);
+		else if (json_object_get(item, "procedure"))
+			err = og_json_parse_procedure_call(item, i, proc);
+		else
+			err = -1;
+
+		if (err)
+			break;
+	}
+
+	return err;
+}
diff --git a/src/json.h b/src/json.h
index 08a78d0..0e98a6e 100644
--- a/src/json.h
+++ b/src/json.h
@@ -98,4 +98,31 @@ struct og_cmd_json {
 	uint32_t	flags;
 };
 
+enum og_procedure_step_type {
+	OG_STEP_COMMAND		= 0,
+	OG_STEP_PROCEDURE,
+};
+
+#define OG_PROCEDURE_STEPS_MAX	256
+
+struct og_procedure_step {
+	enum og_procedure_step_type	type;
+	uint32_t			position;
+
+	union {
+		struct og_cmd_json	cmd;
+		struct {
+			uint64_t	id;
+		} procedure;
+	};
+};
+
+struct og_procedure {
+	uint64_t			id;
+	struct og_procedure_step	steps[OG_PROCEDURE_STEPS_MAX];
+	uint32_t			num_steps;
+};
+
+int og_json_parse_procedure(json_t *element, struct og_procedure *proc);
+
 #endif
diff --git a/src/rest.c b/src/rest.c
index feeb306..9c5d934 100644
--- a/src/rest.c
+++ b/src/rest.c
@@ -4076,9 +4076,72 @@ static int og_cmd_post_center_delete(json_t *element,
 	return 0;
 }
 
+int og_procedure_add_steps(struct og_dbi *dbi, struct og_procedure *proc)
+{
+	struct og_procedure_step *step;
+	uint64_t procedure = 0;
+	const char *legacy_params;
+	const char *msglog;
+	dbi_result result;
+	int i;
+
+	for (i = 0; i < proc->num_steps; i++) {
+		step = &proc->steps[i];
+		switch (step->type) {
+		case OG_STEP_COMMAND:
+			legacy_params = og_msg_params_to_legacy(&step->cmd);
+			if (!legacy_params) {
+				og_dbi_close(dbi);
+				return -1;
+			}
+			result = dbi_conn_queryf(dbi->conn,
+						 "INSERT INTO procedimientos_acciones "
+						 "(idprocedimiento, orden, parametros) "
+						 "VALUES (%d, %d, '%s')",
+						 procedure,
+						 step->position,
+						 legacy_params);
+			if (!result) {
+				dbi_conn_error(dbi->conn, &msglog);
+				syslog(LOG_ERR,
+				       "failed to add procedure command to database (%s:%d) %s\n",
+				       __func__, __LINE__, msglog);
+				og_dbi_close(dbi);
+				free((char *)legacy_params);
+				return -1;
+			}
+
+			dbi_result_free(result);
+			free((char *)legacy_params);
+			break;
+		case OG_STEP_PROCEDURE:
+			result = dbi_conn_queryf(dbi->conn,
+						 "INSERT INTO procedimientos_acciones "
+						 "(idprocedimiento, orden, procedimientoid) "
+						 "VALUES (%d, %d, %d)",
+						 procedure,
+						 step->position,
+						 step->procedure.id);
+			if (!result) {
+				dbi_conn_error(dbi->conn, &msglog);
+				syslog(LOG_ERR,
+				       "failed to add procedure child to database (%s:%d) %s\n",
+				       __func__, __LINE__, msglog);
+				og_dbi_close(dbi);
+				return -1;
+			}
+			dbi_result_free(result);
+			break;
+		}
+	}
+
+	return 0;
+}
+
 static int og_cmd_post_procedure_add(json_t *element,
 				     struct og_msg_params *params)
 {
+	struct og_procedure proc = {};
 	const char *key, *msglog;
 	struct og_dbi *dbi;
 	dbi_result result;
@@ -4092,8 +4155,11 @@ static int og_cmd_post_procedure_add(json_t *element,
 		} else if (!strcmp(key, "name")) {
 			err = og_json_parse_string(value, &params->name);
 			params->flags |= OG_REST_PARAM_NAME;
-		} else if (!strcmp(key, "description"))
+		} else if (!strcmp(key, "description")) {
 			err = og_json_parse_string(value, &params->comment);
+		} else if (!strcmp(key, "steps")) {
+			err = og_json_parse_procedure(value, &proc);
+		}
 
 		if (err < 0)
 			return err;
@@ -4147,10 +4213,14 @@ static int og_cmd_post_procedure_add(json_t *element,
 		og_dbi_close(dbi);
 		return -1;
 	}
-
 	dbi_result_free(result);
+
+	proc.id = dbi_conn_sequence_last(dbi->conn, NULL);
+	err = og_procedure_add_steps(dbi, &proc);
+
 	og_dbi_close(dbi);
-	return 0;
+
+	return err;
 }
 
 static int og_cmd_post_room_add(json_t *element,