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play-feature-flow.md

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Play Feature Flow Documentation

Overview

This document outlines the play feature's user interaction flow using the OODA (Observe, Orient, Decide, Act) loop paradigm. The flow is designed to mirror natural human behavior when interacting with music players.

User Flow OODA Mapping

1. Initial Music Engagement

Observe:

  • User's intent to listen to music
  • Current system state
  • Available music library

Orient:

  • Present familiar music player interface
  • Display user's music collection
  • Show recently played or favorite tracks

Decide:

  • Determine default view (e.g., playlists, recent tracks)
  • Select initial playlist ordering

Act:

  • Load music library
  • Display main interface
  • Present quick-access controls

2. Music Selection

Observe:

  • User's browsing patterns
  • Search/filter interactions
  • Selection behaviors

Orient:

  • Organize music by relevant categories
  • Present clear navigation paths
  • Show contextual information (artists, albums)

Decide:

  • Determine content organization
  • Choose display format
  • Select metadata to show

Act:

  • Display organized music collection
  • Enable browsing/search functionality
  • Show relevant track information

3. Playback Control

Observe:

  • Play/pause requests
  • Skip actions
  • Volume changes
  • Playlist navigation

Orient:

  • Track current playback state
  • Monitor playlist position
  • Track volume levels

Decide:

  • Determine next track
  • Calculate playback position
  • Process control commands

Act:

  • Execute playback commands
  • Update display
  • Manage audio stream

4. Session Management

Observe:

  • User activity/inactivity
  • System events
  • Session duration

Orient:

  • Track session state
  • Monitor system resources
  • Maintain playback history

Decide:

  • Determine session persistence
  • Choose state saving frequency
  • Select recovery points

Act:

  • Save session state
  • Persist playback position
  • Store user preferences

Implementation Guidelines

Core Principles

  1. Immediate Response

    • Controls should respond instantly
    • Visual feedback for all actions
    • Clear state indicators

  2. State Persistence

    • Remember last played track
    • Maintain playlist position
    • Preserve volume settings

  3. Intuitive Navigation

    • Clear control mappings
    • Consistent interface layout
    • Obvious action paths

Key Components

  1. Player Controls

    • Play/Pause toggle
    • Skip forward/backward
    • Volume adjustment
    • Playlist navigation

  2. Display Elements

    • Now playing information
    • Playlist view
    • Progress indicator
    • Volume level

  3. State Management

    • Playback state
    • Track position
    • Volume level
    • Playlist position

Error Handling

  1. Playback Issues

    • Graceful recovery from stream errors
    • Clear error messaging
    • Automatic skip on unplayable tracks

  2. Resource Management

    • Handle memory constraints
    • Manage audio device conflicts
    • Address file access issues

Success Metrics

  1. Response Time

    • Control activation to action < 100ms
    • Track changes < 250ms
    • Interface updates < 50ms

  2. Reliability

    • Successful playback rate > 99%
    • State recovery success > 99%
    • Error recovery rate > 95%

  3. User Experience

    • Minimal learning curve
    • Consistent behavior
    • Predictable outcomes

Implementation Priority

  1. Phase 1: Core Playback

    • Basic play/pause functionality
    • Volume control
    • Track progression

  2. Phase 2: State Management

    • Session persistence
    • Playback position tracking
    • State recovery

  3. Phase 3: Enhanced Features

    • Advanced playlist management
    • Search/filter capabilities
    • Extended metadata display