Add sign-flow.md

Signed-off-by: Łukasz Gryglicki <[email protected]>

Author: lukaszgryglicki

sign-flow.md

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+EasyCLA Sign Flow: Sequence Overview
+
+1. *User Creates a Pull Request (PR)*
+    ◦ A contributor initiates a PR in the repository hosted on GitHub, Gerrit, or GitLab.
+2. *Repository Triggers Activity Endpoint*
+• The repository platform sends a request to EasyCLA’s Python endpoint:
+    ◦ v2/repository-provider/{provider}/activity
+3. *EasyCLA Checks User Authorization*
+    ◦ EasyCLA internally verifies if the users involved in the PR are authorized to contribute to the repository.
+4. *Update Repository with User Status*
+    ◦ EasyCLA communicates back to the repository provider, updating the status of each user as either *signed* or *not signed*.
+5. *User Initiates Sign Process*
+    ◦ If a user is marked as *not signed*, they are prompted to begin the signing process and are redirected to the EasyCLA Contributor Console.
+6. *Contributor Chooses Sign Type*
+• Upon reaching the Contributor Console, the user selects one of two options:
+        ▪︎ *Individual Contributor*
+    ◦ *Corporate Contributor*
+7. *Individual Contributor Flow*
+• *a. Initiate Individual Signature Request*
+• The system invokes the Go-based endpoint:
+        ▪︎ v4/request-individual-signature
+    ◦ This action creates a new signature record with `signed = false` and initiates the signing process.
+• *a1. Redirect to DocuSign*
+    ◦ The API handles the integration with DocuSign, preparing a callback and redirect URL, and redirects the user to DocuSign for signing.
+• *a2. Completion of Signing*
+• Once the user completes the signing on DocuSign, a callback is triggered to:
+        ▪︎ v4/signed/individual/{installation_id}/{github_repository_id}/{change_request_id}
+    ◦ This endpoint updates the signature record’s `signed` flag to `true`, completing the process.
+8. *Corporate Contributor Flow*
+• *b. Initiate Corporate Signature Process*
+9. *Redirect to Company Search*
+        ▪︎ The user is redirected to a company search interface within the Contributor Console.
+10. *Search for Company*
+• Upon selecting a company, the system calls the Go-based search endpoint:
+            • v3/organization/search?companyName=Info&include-signing-entity-name=false
+        ▪︎ This retrieves the relevant company information.
+11. *Check and Prepare Employee Signature*
+• The system invokes the Python endpoint:
+            • v2/check-prepare-employee-signature
+            • This checks whether the company follows a Corporate CLA (CCLA) or an Entity CLA (ECLA) flow.
+• *i. If Company Has a CCLA:*
+                ◦ The system verifies if the user is authorized.
+                ◦ If *not authorized*, it prompts the user to contact the existing CLA manager for authorization.
+• The Go-based endpoint sends a notification to CLA managers:
+                ◦ v4/notify-cla-managers
+            • An email is sent to the CLA managers, and the process ends.
+• *ii. If Company Does Not Have a CCLA:*
+                ◦ The system checks if the user is a CLA manager.
+• *A. User is a CLA Manager:*
+• Assigns CLA manager designee permissions via:
+                ◦ v4/company/{companySFID}/user/{userLFID}/claGroupID/{claGroupID}/is-cla-manager-designee
+• Verifies the assigned role:
+                ◦ v4/company/{companySFID}/user/{userLFID}/claGroupID/{claGroupID}/is-cla-manager-designee
+• If the role is confirmed, it calls the endpoint to request a corporate signature:
+                ◦ v4/request-corporate-signature
+                ◦ This creates the signature record, completing the process.
+• *B. User is Not a CLA Manager:*
+• Fetches company administrators using:
+                ◦ v4/company/{companySFID}/admin
+• Sends an invitation to become a company admin via:
+                ◦ /user/{userID}/invite-company-admin
+    ◦ An email is sent to the user to invite them as a company admin, concluding the process.