Home > Technical Reference > API > [Component Type] > [Component Name]

---

[Component Name] API Reference

Status: 🟡 Draft Last Updated: YYYY-MM-DD Component Type: [Repository | ViewModel | Service | DAO] Layer: [UI | ViewModel | Repository | Database] Package: com.archeryapprentice.[package]

---

Table of Contents

• Overview
• Class Signature
• Constructor
• Properties
• Methods
• State Flows / Live Data
• Usage Examples
• Testing
• Dependencies

---

Overview

Purpose

[Clear 2-3 sentence explanation of what this component does and why it exists]

Responsibilities

• Responsibility 1: [Description]
• Responsibility 2: [Description]
• Responsibility 3: [Description]

Architecture Position

[DIAGRAM PLACEHOLDER] Description: Component diagram showing relationships Path: /assets/images/diagrams/architecture/[component-name]-position.png

---

Class Signature

// Location: app/src/main/kotlin/com/archeryapprentice/[path]/[ComponentName].kt
 
class ComponentName @Inject constructor(
    private val dependency1: Dependency1,
    private val dependency2: Dependency2,
    private val coroutineScope: CoroutineScope = DefaultCoroutineScope()
) {
    // Class body
}

Annotations:

• @HiltViewModel / @Singleton / etc.
• Other relevant annotations

---

Constructor

Parameters

Parameter	Type	Description	Required
dependency1	Dependency1	[Purpose]	Yes
dependency2	Dependency2	[Purpose]	Yes
coroutineScope	CoroutineScope	Coroutine scope for async operations	No (defaults to DefaultCoroutineScope)

Injection

// Hilt provides this automatically
@HiltViewModel
class ComponentName @Inject constructor(...)

---

Properties

Public Properties

propertyName

val propertyName: PropertyType

Description: [What this property represents]

Access: Read-only / Read-write

Example:

val value = component.propertyName

---

anotherProperty

var anotherProperty: PropertyType = defaultValue

Description: [What this property represents]

Default Value: defaultValue

Example:

component.anotherProperty = newValue

---

Private Properties

Implementation Detail

Private properties are not part of the public API but are documented here for maintainers.

Property	Type	Purpose
_internalState	MutableStateFlow<State>	Internal mutable state
repository	Repository	Data access layer

---

Methods

methodName()

suspend fun methodName(
    parameter1: Type1,
    parameter2: Type2
): Result<ReturnType>

Description: [What this method does]

Parameters:

• parameter1 - [Description]
• parameter2 - [Description]

Returns: Result<ReturnType> - [Description of return value]

Throws:

• ExceptionType - [When and why this is thrown]

Example:

viewModelScope.launch {
    val result = component.methodName(param1, param2)
    result.onSuccess { data ->
        // Handle success
    }.onFailure { error ->
        // Handle error
    }
}

Side Effects:

• [Side effect 1]
• [Side effect 2]

Thread Safety: [Safe | Not safe | Safe with conditions]

---

anotherMethod()

fun anotherMethod(param: ParamType): ReturnType

Description: [What this method does]

Parameters:

• param - [Description]

Returns: ReturnType - [Description]

Example:

val result = component.anotherMethod(param)

---

State Flows / Live Data

stateFlowName

val stateFlowName: StateFlow<StateType>

Description: [What state this represents]

Emission Triggers:

• [Event that triggers emission 1]
• [Event that triggers emission 2]

State Type:

data class StateType(
    val field1: Type1,
    val field2: Type2
)

Example Usage:

// In Composable
val state by component.stateFlowName.collectAsState()
 
// In coroutine
component.stateFlowName.collect { state ->
    // React to state changes
}

Initial State: [Description of initial state]

---

anotherStateFlow

val anotherStateFlow: StateFlow<AnotherType>

Description: [What state this represents]

---

Usage Examples

Example 1: [Common Use Case]

Scenario: [Describe the use case]

class UsageExample @Inject constructor(
    private val component: ComponentName
) {
    fun demonstrateUsage() {
        viewModelScope.launch {
            // Step 1: Setup
            val config = ComponentConfig(...)
 
            // Step 2: Call method
            val result = component.methodName(config)
 
            // Step 3: Handle result
            result.onSuccess { data ->
                // Process success
            }.onFailure { error ->
                // Handle error
            }
        }
    }
}

---

Example 2: [Another Use Case]

Scenario: [Describe the use case]

// Example code

---

Example 3: [Integration Pattern]

Scenario: [How to integrate with other components]

// Integration example

---

Testing

Unit Test Example

// Location: app/src/test/kotlin/com/archeryapprentice/[path]/ComponentNameTest.kt
 
@ExperimentalCoroutinesTest
class ComponentNameTest {
 
    @get:Rule
    val coroutineRule = MainDispatcherRule()
 
    private lateinit var mockDependency1: Dependency1
    private lateinit var mockDependency2: Dependency2
    private lateinit var component: ComponentName
 
    @Before
    fun setup() {
        mockDependency1 = mockk()
        mockDependency2 = mockk()
        component = ComponentName(
            dependency1 = mockDependency1,
            dependency2 = mockDependency2,
            coroutineScope = TestScope(coroutineRule.testDispatcher)
        )
    }
 
    @Test
    fun `methodName should return success when conditions are met`() = runTest {
        // Given
        val input = TestInput()
        coEvery { mockDependency1.operation() } returns Result.success(data)
 
        // When
        val result = component.methodName(input)
 
        // Then
        assertThat(result.isSuccess).isTrue()
        assertThat(result.getOrNull()).isEqualTo(expectedData)
        coVerify { mockDependency1.operation() }
    }
}

Test Coverage Requirements

• All public methods have unit tests
• Error cases are tested
• State flow emissions are tested
• Edge cases are covered
• Integration with dependencies is mocked correctly

---

Dependencies

Direct Dependencies

Dependency	Type	Purpose	Injected By
Dependency1	Repository	Data access	Hilt
Dependency2	Service	Business logic	Hilt
CoroutineScope	System	Async operations	Manual/Test

Transitive Dependencies

• [Dependency through Dependency1]
• [Dependency through Dependency2]

Dependency Graph

ComponentName
├── Dependency1
│   ├── Database
│   └── DAO
├── Dependency2
│   └── NetworkClient
└── CoroutineScope

---

Performance Considerations

⚡ Performance Notes

• [Note 1]: [Performance consideration]
• [Note 2]: [Performance consideration]

Complexity Analysis

Method	Time Complexity	Space Complexity	Notes
methodName()	O(n)	O(1)	[Notes]
anotherMethod()	O(1)	O(n)	[Notes]

---

Known Issues

Issue 1: [Description]

Impact: [High | Medium | Low]

Workaround: [If applicable]

Tracking: Issue #123

---

Version History

Version	Date	Changes
1.0	YYYY-MM-DD	Initial implementation
1.1	YYYY-MM-DD	Added method X

---

Related Documentation

Implementation Guides

• How to Use [Component]
• Adding Features with [Component]

Related APIs

• Dependency1 API
• Dependency2 API

Architecture

• Layer Architecture
• Design Patterns

---

Code Location

Source: app/src/main/kotlin/com/archeryapprentice/[path]/[ComponentName].kt Tests: app/src/test/kotlin/com/archeryapprentice/[path]/[ComponentName]Test.kt

---

Feedback

Found an issue with this API documentation? Report it on GitHub

---

Document Info:

• Version: 1.0
• Last Updated: YYYY-MM-DD
• Maintained By: [Team/Person]
• Code Version: [Git commit hash or app version]