69 lines
2.8 KiB
Markdown
69 lines
2.8 KiB
Markdown
# System Sequence Diagram: Study Flash Cards
|
|
|
|
## Metadata
|
|
| Key | Value |
|
|
| --- | --- |
|
|
| ID | SSD-001 |
|
|
| CrossReference | [UC-001], [DM-001], [OC-001] |
|
|
| Language | en |
|
|
| Domain | it |
|
|
|
|
## Version History
|
|
| Date | Status | Author | Reviewer | Change | Commit |
|
|
| --- | --- | --- | --- | --- | --- |
|
|
| 2026-10-14 | Deprecated | Jens Tirsvad Nielsen | AI as stand-in for S01 | Initial version | [c3fbcbc] |
|
|
| 2026-10-14 | Accepted | Jens Tirsvad Nielsen | AI as stand-in for S01 | Added chooseLevel; startStudySession returns the levels | [0b983b7] |
|
|
|
|
---
|
|
|
|
## Source Use Case
|
|
|
|
Study Flash Cards ([UC-001]) — scenario: main success scenario, with the unknown button as one repetition.
|
|
|
|
## Diagram
|
|
|
|
```plantuml
|
|
@startuml
|
|
actor Learner as L
|
|
participant ":System" as S
|
|
L -> S : startStudySession()
|
|
S --> L : levels (100 words, 1000 words, all words)
|
|
L -> S : chooseLevel(level)
|
|
S --> L : card (word, language name)
|
|
... 3000 ms pass, the system turns the card over ...
|
|
S --> L : card (translation, language name)
|
|
L -> S : markKnown()
|
|
S --> L : next card (word, language name)
|
|
L -> S : markUnknown()
|
|
S --> L : next card (word, language name)
|
|
@enduml
|
|
```
|
|
|
|
## System Operations
|
|
|
|
| Step | Message | Parameters | Return | Use case step |
|
|
| --- | --- | --- | --- | --- |
|
|
| 1 | startStudySession | none | the levels to choose from | 1, 2 |
|
|
| 2 | chooseLevel | level | card to show, or "nothing left to learn" | 3, 4, 5 |
|
|
| 3 | (timer) turn the card over | none | the same card, translation side | 6 |
|
|
| 4 | markKnown | none | next card, or "nothing left to learn" | 7, 8, 9 |
|
|
| 5 | markUnknown | none | next card, or "nothing left to learn" | 7a, 9 |
|
|
|
|
The turn-over in step 3 is started by the system's own timer, not by a message from the Learner; it is shown as a return without a call, which is the one deviation from "every return answers a message". When the level is given at start (extension 3a of [UC-001]) the Learner's first message is `chooseLevel` and `startStudySession` is not sent.
|
|
|
|
## Alternate Flows
|
|
|
|
The extensions 3a, 4a, 5a, 7b and 9a of [UC-001] add no system operation of their own (they are errors, speech, timer and level handling inside the operations above); their behaviour is in [OC-001] as exceptions. They are out of scope of this diagram, which shows the main success scenario with `markUnknown` as the one alternate answer.
|
|
|
|
## Lifecycle Notes
|
|
|
|
The system instance lives for one run of the program. The words to learn are created when the level is chosen and saved after each `markKnown`.
|
|
|
|
---
|
|
|
|
[UC-001]: ./uc.md
|
|
[DM-001]: ../domain-model.md
|
|
[OC-001]: ./oc.md
|
|
[c3fbcbc]: https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/031-flash-card/commit/c3fbcbcfaf799e0ae34aed7e14d3bc8a62f03db3
|
|
[0b983b7]: https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/031-flash-card/commit/0b983b7fdadf6958717c1d0227d0f2ebe037f7b1
|