# Use Case 1.3 App tour

## Overview

| Aspect                       | Description                                                                                                                                                                                                                                                             |
| ---------------------------- |-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **Summary**                  | The user watches short videos to learn about the app.                                                                                                                                                                                                                   |
| **Goal**                     | Learning about app functionalities.                                                                                                                                                                                                                                     |
| **Preconditions**            | *None*                                                                                                                                                                                                                                                                  |
| **Postconditions**           | *None*                                                                                                                                                                                                                                                                  |
| **Triggered by**             | <ul><li>User completes [UC1.2 Open the app](UC1.2_OpenTheApp.md)</li><li>User selects Start App Tour in [UC9.1 Show app menu](UC9.1_ShowAppMenu.md)</li><li>User selects Start App Tour in [UC7.1 Show all available cards](./UC7.1_ShowAllAvailableCards.md)</ul></li> |
| **Additional Documentation** | *None*                                                                                                                                                                                                                                                                  |
| **Possible errors**          | <ul><li>No internet</li><li>Server unreachable</ul></li>                                                                                                                                                                                                                |
| **Logical test cases**       | <ul><li>[LTC16 User views app tour](../logical-test-cases.md#ltc16)</li></ul>                                                                                                                                                                                           |

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## Flow

| #       | Description                                                                                                                                                                                                                          | Next                                                                    |
| ------- |--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| ----------------------------------------------------------------------- |
| **1**   | **PRIMARY SCENARIO**                                                                                                                                                                                                                 |                                                                         |
| **1.1** | **System displays screen 'App Tour Overview'**<ul><li>Message: App tour videos</li><li>Items: Videos</li><li>Actions: Back</li></ul>                                                                                                 |                                                                         |
| 1.1a    | User selects Video                                                                                                                                                                                                                   | 1.3                                                                     |
| 1.1b    | User selects Back                                                                                                                                                                                                                    | Go to: [UC7.1 Show all available cards](UC7.1_ShowAllAvailableCards.md) |
| **1.2** | **System displays screen 'App Tour Video' (with selected video)**<ul><li>Video starts to play automatically</li><li>Controls: Play(while paused), Pause(while playing), Controls, Rewind, Forward, Subtitles, Sound, Close</ul></li> |                                                                         |
| 1.2a    | User selects Pause <br>&rarr; Video pauses                                                                                                                                                                                           |                                                                         |
| 1.2b    | User selects Play <br>&rarr; Video plays                                                                                                                                                                                             |                                                                         |
| 1.2c    | User selects Controls <br>&rarr; Controls are toggled on/off                                                                                                                                                                         |                                                                         |
| 1.2d    | User selects Rewind <br>&rarr; Video is rewinded 10 seconds                                                                                                                                                                          |                                                                         |
| 1.2e    | User selects Forward <br>&rarr; Video is forwarded 10 seconds                                                                                                                                                                        |                                                                         |
| 1.2f    | User selects Sound <br>&rarr; Sound is toggled on/off                                                                                                                                                                                |                                                                         |
| 1.2g    | User selects Subtitles <br>&rarr; Subtitles are toggled on/off                                                                                                                                                                       |                                                                         |
| 1.2h    | User selects Close                                                                                                                                                                                                                   | 1.2                                                                     |
| 1.2i    | Error: No internet                                                                                                                                                                                                                   | Error flow: No internet                                                 |
| 1.2j    | Error: Server unreachable                                                                                                                                                                                                            | Error flow: Server unreachable                                          |