## PRD: Configurable Hysteresis Duration for AIVA

This PRD builds upon GPM-049 by introducing the ability to configure the duration for which a value must remain above or below the hysteresis thresholds before a scale change is triggered. This will further refine AIVA's responsiveness and prevent rapid oscillations around the thresholds.

### GPM-050: Introduce Hysteresis Duration Configuration Parameters
**Goal:** Allow users to configure the time duration (in seconds) a value needs to stay above the upscale threshold or below the downscale threshold before a scaling action is triggered.
**Acceptance Criteria:**
- New configuration parameters `upscale_duration` and `downscale_duration` (in seconds) are added to the configuration file (e.g., `aiva_config.yaml`). Default values should be provided (e.g., 0 seconds).
- The `upscale_duration` and `downscale_duration` values can also be overridden via command-line arguments.
- The application can successfully read and parse these new configuration parameters.
**Files:** `aiva_config.yaml`, `config_parser.py`, `aiva.py`
**Spawns:** Implement the logic to track time and only trigger scaling after the configured duration.

### GPM-051: Implement Time Tracking for Upscale Threshold
**Goal:** Track the time a value stays above the upscale threshold.
**Acceptance Criteria:**
- Implement a mechanism to record the timestamp when a value crosses the upscale threshold.
- Implement a timer that starts when the value crosses the upscale threshold.
- The timer stops if the value falls below the upscale threshold.
- No scaling action occurs if the value falls below the upscale threshold before the `upscale_duration`.
**Files:** `scaling_logic.py`, `timer.py` (if a separate timer module is needed)
**Spawns:** Implement time tracking for the downscale threshold.

### GPM-052: Implement Time Tracking for Downscale Threshold
**Goal:** Track the time a value stays below the downscale threshold.
**Acceptance Criteria:**
- Implement a mechanism to record the timestamp when a value crosses the downscale threshold.
- Implement a timer that starts when the value crosses the downscale threshold.
- The timer stops if the value rises above the downscale threshold.
- No scaling action occurs if the value rises above the downscale threshold before the `downscale_duration`.
**Files:** `scaling_logic.py`
**Spawns:** Integrate the time tracking mechanism with the scaling logic.

### GPM-053: Integrate Time Tracking with Scaling Logic for Upscaling
**Goal:** Trigger an upscale action only after the value remains above the upscale threshold for the configured `upscale_duration`.
**Acceptance Criteria:**
- The scaling logic checks if the `upscale_duration` has elapsed since the value crossed the upscale threshold.
- An upscale action is triggered only if the `upscale_duration` has elapsed.
- The system accurately detects the `upscale_duration` and triggers scaling at the correct time.
**Files:** `scaling_logic.py`
**Spawns:** Integrate the time tracking mechanism with the scaling logic for downscaling.

### GPM-054: Integrate Time Tracking with Scaling Logic for Downscaling
**Goal:** Trigger a downscale action only after the value remains below the downscale threshold for the configured `downscale_duration`.
**Acceptance Criteria:**
- The scaling logic checks if the `downscale_duration` has elapsed since the value crossed the downscale threshold.
- A downscale action is triggered only if the `downscale_duration` has elapsed.
- The system accurately detects the `downscale_duration` and triggers scaling at the correct time.
**Files:** `scaling_logic.py`
**Spawns:** Add logging to show when a scaling action is blocked due to hysteresis duration.

### GPM-055: Add Logging for Hysteresis Duration Blocking
**Goal:** Log when a scaling action is prevented due to the hysteresis duration not being met.
**Acceptance Criteria:**
- When a value crosses a threshold but the duration is not met, a log message is generated indicating this.
- The log message includes the current value, the threshold value, and the remaining time before a scaling action would be triggered.
- Log messages are clear and informative for debugging purposes.
**Files:** `scaling_logic.py`, `logging_config.py`
**Spawns:** Implement unit tests for the hysteresis duration logic.

### GPM-056: Implement Unit Tests for Hysteresis Duration Logic
**Goal:** Ensure the hysteresis duration logic is functioning correctly through unit tests.
**Acceptance Criteria:**
- Unit tests cover scenarios where the duration is met and not met for both upscaling and downscaling.
- Unit tests cover edge cases, such as very short or very long durations, and durations of 0.
- All unit tests pass.
**Files:** `tests/test_scaling_logic.py`
**Spawns:** Explore adaptive hysteresis duration based on the rate of change of the input value.
