45 lines
2.0 KiB
Markdown
45 lines
2.0 KiB
Markdown
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# Spec Delta: fingerprint-wizard
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## ADDED Requirements
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### Requirement: Scanner availability is shown and gates capture
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The wizard SHALL consume fpagent's `fprint-device-status`
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`{available, device, captureAgentId}` event and SHALL distinguish the agent
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being offline (socket not connected), connected with no supported reader
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attached (`available` false), and ready (`available` true). Until a status is
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received, availability SHALL be treated as unknown. The wizard SHALL NOT start a
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capture while no supported reader is attached, SHALL re-enable capture when a
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reader becomes available, and SHALL clear availability when the agent
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disconnects. Availability means "a supported reader is attached"; it does not
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guarantee a capture will succeed.
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#### Scenario: Reader attached on connect
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- **WHEN** the page connects and fpagent reports `fprint-device-status` with
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`available: true`
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- **THEN** the wizard shows the agent ready and leaves capture enabled
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#### Scenario: No reader attached on connect
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- **WHEN** the page connects and fpagent reports `fprint-device-status` with
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`available: false`
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- **THEN** the wizard shows that the scanner is not connected, explains captures
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are disabled, and disables the capture controls
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#### Scenario: Unplug blocks capture
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- **WHEN** fpagent reports `available: false` while the operator is capturing or
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between captures
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- **THEN** the wizard disables the capture controls and a capture attempt is
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refused
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#### Scenario: Replug re-enables capture
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- **WHEN** fpagent reports `available: true` after the reader is reconnected
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- **THEN** the wizard re-enables the capture controls
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#### Scenario: Status absent or old agent
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- **WHEN** the connected agent never reports `fprint-device-status`
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- **THEN** availability stays unknown and the wizard does not block capture
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#### Scenario: Disconnect clears availability
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- **WHEN** the agent socket disconnects
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- **THEN** the wizard shows the agent offline and does not present the reader as
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available
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