jami-docs/technical/LRC-documentation.md

*This page is a stub.*

### Introduction

-   Lrc (Libringclient) is an interface between the clients and
    the daemon. It ensures to get the same behaviour for all client
    using it.
![Introduction](/uploads/01896b43f2a29d29e5148ad60e608846/Introduction.png)

note: red = missing feature.

### DatabaseManager

-   this class is an interface between lrc and the sqlite database. This
    class should not be called directly from the client.

![Databasemanager](/uploads/896f30e099c7bb7b40451b528aefda6e/Databasemanager.png)

### NewCallModel class and NewCall namespace

-   NewCallModel is an interface used to manage the calls.

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-   When we need information about calls, members functions from the
    model can return NewCall::Info.

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-   When we need to perform some operation on a call, we pass it callId
    to the delegate performing the operation.

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-   note about the name : we are using New as prefix to avoid conflict
    with the current CallModel and Call objects.

![Newcallmodel_newcall](/uploads/c9ba7bec82a6d2cd3bc5ba1cde018f4a/Newcallmodel_newcall.png)

### ContactModel class and Contact namespace

-   ContactModel is an interface to manage the contacts.

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-   When we need information about contact(s), members functions from
    the model can return Contact::Info

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-   When we need to perform some operation on a contact, we pass it uri
    to the delegate performing the operation.

![Contactmodel_contact](/uploads/42c32722576a7a25de813419503805f5/Contactmodel_contact.png)

### ConversationModel class, Conversation namespace and Message namespace

-   ConversationModel is an interface used to manage conversations
    and messages.

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-   When we need information about some conversation(s), members
    functions from the model can return Conversation::Info.
    Conversation::Info contains Messages.

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-   note about Message : so far, we didn't need a MessageModel, but this
    could be come soon.

![Conversationmodel_conversation_message](/uploads/1b1ad190ef65b5aa088bbcb785645099/Conversationmodel_conversation_message.png)

### resources

[Diagram1.dia](/uploads/f6d0a81d67b075c13c57b7d9771ca065/Diagram1.dia)

[Diagram2.dia](/uploads/00b3212a7642e58fd35b74c48e712332/Diagram2.dia)