# Config 3: Empty Values & Mixed Content

## Scenario
**Corner case testing** untuk validasi parser behavior dengan **empty values**, **mixed arrays** (kombinasi string dan object), dan **special characters**.

## Use Case
Testing edge cases yang mungkin ditemukan di production: config dengan optional values, mixed content types, dan special characters dalam values.

---

## Input: CONFIG3.yaml

```yaml
payment:
  provider: stripe
  ApiSecret: 
  EmptyObject:
  NestedEmpty:
    level1:
    level2:
      level3: 
  MixedArray:
    - simpleString1
    - name: objectInArray
      value: 123
    - simpleString2
    - key: anotherObject
      type: TEST
      subconfig:
  StatusCodes:
    - 200
    - 201
    - 204
  SpecialChars: "value:with:colons"
  MultilineValue: TrxUrlMethod || ':' || relurl || ':' || minifiedMsg
  NullishValues:
    empty: 
    zero: 0
    false: false
```

---

## Output: hasilParseConfig3.json

```json
{
  "payment": {
    "provider": "stripe",
    "ApiSecret": "",
    "EmptyObject": "",
    "NestedEmpty": {
      "level1": "",
      "level2": {
        "level3": ""
      }
    },
    "MixedArray": [
      "simpleString1",
      {
        "name": "objectInArray",
        "value": "123",
        "subconfig": ""
      },
      "simpleString2",
      {
        "key": "anotherObject",
        "type": "TEST"
      }
    ],
    "StatusCodes": ["200", "201", "204"],
    "SpecialChars": "value:with:colons",
    "MultilineValue": "TrxUrlMethod || ':' || relurl || ':' || minifiedMsg",
    "NullishValues": {
      "empty": "",
      "zero": "0",
      "false": "false"
    }
  }
}
```

---

## ESQL Usage

```esql
DECLARE config REFERENCE TO Environment.Variables;
DECLARE success BOOLEAN;

CALL ACE_LIB.getConfig(
    'EDGE_CASE_CONFIG',
    'payment',
    '/path/to/CONFIG3.yaml',
    '600',
    config
) INTO success;

IF success THEN
    -- Empty values menjadi empty string
    DECLARE apiSecret CHARACTER config.ApiSecret;  -- ""
    
    -- Nested empty values
    DECLARE level3 CHARACTER config.NestedEmpty.level2.level3;  -- ""
    
    -- Mixed array: bisa string atau object
    DECLARE itemRef REFERENCE TO config.MixedArray[1];
    WHILE LASTMOVE(itemRef) DO
        -- Check if it's object or string
        IF itemRef.name IS NOT NULL THEN
            -- It's an object
            DECLARE itemName CHARACTER itemRef.name;
        ELSE
            -- It's a simple string
            DECLARE itemValue CHARACTER itemRef;
        END IF;
        MOVE itemRef NEXTSIBLING;
    END WHILE;
    
    -- Special characters preserved
    DECLARE specialVal CHARACTER config.SpecialChars;
    -- Value: "value:with:colons"
END IF;
```

---

## Key Features Tested

✅ Empty string values (`ApiSecret:`)  
✅ Nested empty objects  
✅ Mixed arrays (strings and objects together)  
✅ Special characters in values (`:` tidak break parser)  
✅ Numeric values as strings (`"0"`, `"200"`)  
✅ Boolean-like values as strings (`"false"`)  
✅ Complex expression strings

---

## Important Notes

- Empty values (`key:`) → empty string `""`
- All numeric values → parsed as string (`"0"`, `"123"`)
- Boolean values → parsed as string (`"false"`, `"true"`)
- Special chars in value → preserved as-is
- Mixed arrays → valid dan bisa di-handle

---

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