How to re-structure the existing graphql source in gatsby - graphql

Question

I use gatsby-source-strapi to gather some data from strapi in gatsby
i need to change the data structure and generate a new set of source for my staticquery,
how do i achieve the expected result below with gatsby graphql function? (createResolvers, sourceNode, createSchemaCustomization)
GIVEN that i dont wanna to change the database structure
e.g original query
query MyQuery {
allStrapiAppPermissions {
edges {
node {
name
markets {
code
}
}
}
}
}
result that generate by above query
{
"data": {
"allStrapiAppPermissions": {
"edges": [
{
"node": {
"name": "PERMISSION_MYACC_OVERVIEW",
"markets": [
{
"code": "hk"
},
{
"code": "th"
}
]
}
},
{
"node": {
"name": "PERMISSION_MYACC_UPDATE",
"markets": [
{
"code": "hk"
}
]
}
}
]
}
}
}
e.g expected result that i wanna to achieve
{
"data": {
"all_Concated_StrapiAppPermissions": {
"edges": [
{
"node": {
"markets": {"code": "hk"},
"permissions": [
{
"name": "PERMISSION_MYACC_UPDATE"
},
{
"name": "PERMISSION_MYACC_OVERVIEW"
}
]
}
},
{
"node": {
"markets": {"code": "th"},,
"permissions": [
{
"name": "PERMISSION_MYACC_OVERVIEW"
}
]
}
}
]
}
}
}