Jira Transition Permissions

You are implementing the permission check behind a Jira-style workflow.

Issues. Each entry of issues is [issue_id, status, assignee, reporter], giving the issue's starting status and the user names of its assignee and reporter.

Rules. Each entry of rules is [from_status, to_status, required_role] and allows an issue to move from from_status to to_status for any user who satisfies required_role:

• "any": every user satisfies it.
• "assignee": only the user whose name equals the issue's assignee.
• "reporter": only the user whose name equals the issue's reporter.
• Any other string (for example "admin"): a user satisfies it if that string appears in the request's user_roles list.

Requests. Process requests in order. Each is [issue_id, user, to_status, user_roles]: user user, who holds the roles in user_roles, asks to move the issue to to_status. The request succeeds if and only if:

• the issue exists, and
• at least one rule has from_status equal to the issue's current status, to_status equal to the requested status, and a required_role the user satisfies.

A successful request changes the issue's status immediately, so it affects later requests. A failed request changes nothing.

Return a list with one boolean per request, True if it succeeded and False otherwise.

Notes:

• All comparisons are exact and case-sensitive.
• Several rules may cover the same from_status/to_status pair; satisfying any one of them is enough.
• There is no implicit "stay in the same status" transition: moving to the current status needs a rule whose from_status and to_status are equal.