# # Overview
# In this file, we are testing that:
#
# * We can supply custom names to `pg_track_function` and have them applied in the schema
# * Name aliases are applied correctly for all the possible specified cases, see https://github.com/hasura/graphql-engine-mono/pull/2419
# * We can omit custom names from `pg_track_function`
# * We can set and unset custom names with `set_function_customization`
# * We test that we don't introduce name clashes


- description: Define the SQL function the tests will be using
  url: /v2/query
  status: 200
  query:
    type: run_sql
    args:
      sql: |
        create function unaliased_function(t test)
        returns setof post as $$
            select *
            from post
            where
            title ilike ('%' || t.name || '%')
            $$ language sql stable;


# Test: We can supply (all) aliases via `pg_track_function`, and the names are applied.

- description: Test that we supply all custom names to `pg_track_function`.
  url: /v1/metadata
  status: 200
  response:
    message: success
  query:
    type: pg_track_function
    args:
      function: unaliased_function
      configuration:
        custom_root_fields:
         function: nameBase
         function_aggregate: nameAggregate

- description: Execute the function without the alias, which should fail
  url: /v1/graphql
  status: 200
  query:
    query: |
      query {
        unaliased_function (args: {t: "(1, hasura,311cf381-71e7-449b-bac5-86cd6deafd5b)"}) {
          title
          content
        }
      }
  response:
    "errors": [
      {
        "message": "field \"unaliased_function\" not found in type: 'query_root'",
        "extensions": {
          "code": "validation-failed",
          "path": "$.selectionSet.unaliased_function"
        }
      }
    ]

- description: Execute the function by its alias, which should succeed
  url: /v1/graphql
  status: 200
  query:
    query: |
      query {
        nameBase (args: {t: "(1, hasura,311cf381-71e7-449b-bac5-86cd6deafd5b)"}) {
          title
          content
        }
      }
  response:
    data:
      nameBase:
        - title: post by hasura
          content: content for post

- description: Execute the function with aggregation by its aggregation-alias, which should succeed
  url: /v1/graphql
  status: 200
  query:
    query: |
      query {
        nameAggregate (args: {t: "(1, hasura,311cf381-71e7-449b-bac5-86cd6deafd5b)"}) {
          aggregate {
            count
          }
        }
      }
  response:
    data:
      nameAggregate:
        aggregate:
          count: 1

- description: Teardown the test of fully given aliases
  url: /v1/metadata
  status: 200
  response:
    message: success
  query:
    type: pg_untrack_function
    args:
      name: unaliased_function


# Test: We can supply just the base alias via `pg_track_function`, and the names are applied.

- description: Test that we supply all custom names to `pg_track_function`.
  url: /v1/metadata
  status: 200
  response:
    message: success
  query:
    type: pg_track_function
    args:
      function: unaliased_function
      configuration:
        custom_name: aliased

- description: Execute the function without the alias, which should fail
  url: /v1/graphql
  status: 200
  query:
    query: |
      query {
        unaliased_function (args: {t: "(1, hasura,311cf381-71e7-449b-bac5-86cd6deafd5b)"}) {
          title
          content
        }
      }
  response:
    "errors": [
      {
        "message": "field \"unaliased_function\" not found in type: 'query_root'",
        "extensions": {
          "code": "validation-failed",
          "path": "$.selectionSet.unaliased_function"
        }
      }
    ]

- description: Execute the function by its alias, which should succeed
  url: /v1/graphql
  status: 200
  query:
    query: |
      query {
        aliased (args: {t: "(1, hasura,311cf381-71e7-449b-bac5-86cd6deafd5b)"}) {
          title
          content
        }
      }
  response:
    data:
      aliased:
        - title: post by hasura
          content: content for post

- description: Execute the function with aggregation by its aggregation-alias, which should succeed
  url: /v1/graphql
  status: 200
  query:
    query: |
      query {
        aliased_aggregate (args: {t: "(1, hasura,311cf381-71e7-449b-bac5-86cd6deafd5b)"}) {
          aggregate {
            count
          }
        }
      }
  response:
    data:
      aliased_aggregate:
        aggregate:
          count: 1


# Test: Using set_function_customization

- description: Test that we fail on non-existing functions
  url: /v1/metadata
  status: 400
  response:
    code: not-exists
    error: 'function "non_existing_function" does not exist in source: default'
    path: $.args
  query:
    type: pg_set_function_customization
    args:
      function: non_existing_function
      configuration: { }

- description: Test that we fail on duplicate custom root fields
  url: /v1/metadata
  status: 400
  response:
    code: parse-failed
    error: "Error when parsing command set_function_customization.\n\
      See our documentation at https://hasura.io/docs/latest/graphql/core/api-reference/metadata-api/index.html#metadata-apis.\n\
      Internal error message: the following custom root field names are duplicated: \"duplicate_name\" and \"duplicate_name\""
    path: $.args.configuration.custom_root_fields
  query:
    type: pg_set_function_customization
    args:
      function: unaliased_function
      configuration:
        custom_root_fields:
          function: duplicate_name
          function_aggregate: duplicate_name

- description: Test that we can clear the customized names
  url: /v1/metadata
  status: 200
  response:
    message: success
  query:
    type: pg_set_function_customization
    args:
      function: unaliased_function
      configuration: { }

- descripion: Execute the function without the alias, which should now work
  url: /v1/graphql
  status: 200
  query:
    query: |
      query {
        unaliased_function (args: {t: "(1, hasura,311cf381-71e7-449b-bac5-86cd6deafd5b)"}) {
          title
          content
        }
      }
  response:
    data:
      unaliased_function:
        - title: post by hasura
          content: content for post

- description: Test that we can set customized names using `set_function_customization`
  url: /v1/metadata
  status: 200
  response:
    message: success
  query:
    type: pg_set_function_customization
    args:
      function: unaliased_function
      configuration:
        custom_root_fields:
         function: nameBaseOther

- description: Execute the function by its alias
  url: /v1/graphql
  status: 200
  query:
    query: |
      query {
        nameBaseOther (args: {t: "(1, hasura,311cf381-71e7-449b-bac5-86cd6deafd5b)"}) {
          title
          content
        }
      }
  response:
    data:
      nameBaseOther:
        - title: post by hasura
          content: content for post

- description: Execute the function with aggregation (unaliased), which should succeed.
  url: /v1/graphql
  status: 200
  query:
    query: |
      query {
        unaliased_function_aggregate (args: {t: "(1, hasura,311cf381-71e7-449b-bac5-86cd6deafd5b)"}) {
          aggregate {
            count
          }
        }
      }
  response:
    data:
      unaliased_function_aggregate:
        aggregate:
          count: 1

# Test: We reject name clashes: A function is aliased to an existing (unaliased) function.
# Note: We are not going to go to great lengths to ensure all the different
# conceivable ways collisions could be introduced are avoided, because there is
# a general mechanism in the code that builds the schema cache which ensures no
# collisions appear in the final, generated schema.
# (issue https://github.com/hasura/graphql-engine-mono/issues/1868 has a bit
# more info on this subject)

- description: "Setup: Define a separate function to cause clashes"
  url: /v2/query
  status: 200
  query:
    type: run_sql
    args:
      sql: |
        create function unaliased_function2(t test)
        returns setof post as $$
            select *
            from post
            where
            title ilike ('%' || t.name || '%')
            $$ language sql stable;

- description: "Setup: Track the new function"
  url: /v1/metadata
  status: 200
  response:
    message: success
  query:
    type: pg_track_function
    args:
      function: unaliased_function2

- description: "Setup: clear up aliases of unaliased_function"
  url: /v1/metadata
  status: 200
  response:
    message: success
  query:
    type: pg_set_function_customization
    args:
      function: unaliased_function
      configuration: {}

- description: Test that we cannot alias `unaliased_function2` to `unaliased_function`
  url: /v1/metadata
  status: 500
  response:
    code: unexpected
    error: 'found duplicate fields in selection set: unaliased_function_aggregate, unaliased_function'
    path: $.args

  query:
    type: pg_set_function_customization
    args:
      function: unaliased_function2
      configuration:
        custom_name: unaliased_function