aicyclingcoach-go/mode-ascii_chart_visualization-readme.md

ASCII Chart Visualization Mode

Purpose

This mode focuses on implementing terminal-based charts for activity metrics (HR, power, elevation) using Unicode block characters. The charts must be responsive to terminal size and efficiently render large datasets.

Key Features

• Data downsampling for large datasets
• Normalization of values to terminal height
• Rendering with Unicode block characters (▁▂▃▄▅▆▇█)
• Responsive design that adapts to terminal resize events
• Integration with the activity detail screen

Integration Points

• internal/tui/components/chart.go
• internal/types/downsample.go
• internal/tui/screens/activity_detail.go

Dependencies

• Requires activity data model to be populated
• Relies on downsampling functionality

Expected Outcomes

• Charts for HR, power, and elevation in activity detail view
• Efficient rendering of up to 10,000 data points
• Unit tests covering 90% of chart logic