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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,115 +1,43 @@ | ||
| package engine | ||
|
|
||
| import ( | ||
| "encoding/base64" | ||
| "encoding/json" | ||
| "fmt" | ||
|
|
||
| "github.com/steebchen/prisma-client-go/logger" | ||
| "strings" | ||
| ) | ||
|
|
||
| // transformResponse for raw queries | ||
| // transforms all custom prisma types into native go types, such as | ||
| // [{"prisma__type":"string","prisma__value":"asdf"},{"prisma__type":"null","prisma__value":null}] | ||
| // -> | ||
| // ["asdf", null] | ||
| func transformResponse(data []byte) ([]byte, error) { | ||
| var m interface{} | ||
| if err := json.Unmarshal(data, &m); err != nil { | ||
| return nil, err | ||
| } | ||
| type Input struct { | ||
| Columns []string `json:"columns"` | ||
| Types []string `json:"types"` | ||
| Rows [][]interface{} `json:"rows"` | ||
| } | ||
|
|
||
| forEachValue(&m, func(k *string, i *int, v *interface{}) (interface{}, bool) { | ||
| if v == nil { | ||
| return nil, false | ||
| } | ||
| var n = *v | ||
| o, isObject := (*v).(map[string]interface{}) | ||
| if isObject { | ||
| var ok bool | ||
| n, ok = handleObject(o) | ||
| if !ok { | ||
| return n, false | ||
| } | ||
| } | ||
| return n, true | ||
| }) | ||
| // TransformResponse for raw queries | ||
| func TransformResponse(data []byte) ([]byte, error) { | ||
| // TODO properly detect a json response | ||
| if !strings.HasPrefix(string(data), `{"columns":[`) { | ||
| return data, nil | ||
| } | ||
|
|
||
| out, err := json.Marshal(m) | ||
| var input Input | ||
| err := json.Unmarshal(data, &input) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("transform response marshal: %w", err) | ||
| return nil, err | ||
| } | ||
|
|
||
| logger.Debug.Printf("transformed response: %s", out) | ||
|
|
||
| return out, nil | ||
| } | ||
| output := make([]map[string]interface{}, 0) | ||
|
|
||
| func handleObject(o map[string]interface{}) (interface{}, bool) { | ||
| if t, ok := o["prisma__type"]; ok { | ||
| if t == "bytes" { | ||
| // bytes from prisma are base64 encoded | ||
| bytes, ok := o["prisma__value"].(string) | ||
| if !ok { | ||
| panic("expected bytes") | ||
| } | ||
| dst := make([]byte, base64.StdEncoding.DecodedLen(len(bytes))) | ||
| n, err := base64.StdEncoding.Decode(dst, []byte(bytes)) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| dst = dst[:n] | ||
| return dst, false | ||
| for _, row := range input.Rows { | ||
| m := make(map[string]interface{}) | ||
| for i, column := range input.Columns { | ||
| m[column] = row[i] | ||
| } | ||
| if t == "array" { | ||
| value, ok := o["prisma__value"].([]interface{}) | ||
| if !ok { | ||
| panic("expected array") | ||
| } | ||
| var items []interface{} | ||
| for _, item := range value { | ||
| item, _ := handleObject(item.(map[string]interface{})) | ||
| items = append(items, item) | ||
| } | ||
| return items, false | ||
| } | ||
| return o["prisma__value"], false | ||
| output = append(output, m) | ||
| } | ||
| return o, true | ||
| } | ||
|
|
||
| func forEachValue(obj *interface{}, handler func(*string, *int, *interface{}) (interface{}, bool)) { | ||
| if obj == nil { | ||
| return | ||
| } | ||
| var ok bool | ||
| var n = *obj | ||
| // Yield all key/value pairs for objects. | ||
| o, isObject := (*obj).(map[string]interface{}) | ||
| if isObject { | ||
| for k := range o { | ||
| item := o[k] | ||
| o[k], ok = handler(&k, nil, &item) | ||
| item = o[k] | ||
| if ok { | ||
| forEachValue(&item, handler) | ||
| } | ||
| } | ||
| n = o | ||
| } | ||
| // Yield each index/value for arrays. | ||
| a, isArray := (*obj).([]interface{}) | ||
| if isArray { | ||
| for i := range a { | ||
| item := a[i] | ||
| a[i], ok = handler(nil, &i, &item) | ||
| item = a[i] | ||
| if ok { | ||
| forEachValue(&item, handler) | ||
| } | ||
| } | ||
| n = a | ||
| o, err := json.Marshal(output) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| *obj = n | ||
| // Do nothing for primitives since the handler got them. | ||
|
|
||
| return o, nil | ||
| } |
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