Based on the problem statement, you can define the OPL (Ory Permission Language) as follows: First, you need to define the namespaces in your Keto config:

yaml # ...   namespaces:    - id: 0      name: groups    - id: 1      name: reports   #...

Then, you can define the permissions for each group and the admin role:

plaintext // View only access for finance department   reports:finance#view@(groups:finance#member)   // View only access for community department   reports:community#view@(groups:community#member)   // View only access for marketing department   reports:marketing#view@(groups:marketing#member)   // Edit access for admin group   reports:finance#edit@(groups:admin#member)   reports:community#edit@(groups:admin#member)   reports:marketing#edit@(groups:admin#member)   reports:finance#view@(groups:admin#member)   reports:community#view@(groups:admin#member)   reports:marketing#view@(groups:admin#member)

This OPL code defines that members of the

finance

,

community

, and

marketing

groups have view access to their respective reports. The

admin

group has both view and edit access to all reports. Please note that you need to add users to these groups in your application. For example:

plaintext groups:finance#member@User1   groups:community#member@User2   groups:marketing#member@User3   groups:admin#member@AdminUser

This code adds

User1

to the

finance

group,

User2

to the

community

group,

User3

to the

marketing

group, and

AdminUser

to the

admin

group. For more information, please refer to the [Ory documentation](https://www.ory.sh/docs/keto/guides/rbac).

Based on the information provided in the extracts, here's an example of how you might define the OPL (Ory Permission Language) for your problem statement:

typescript import { Namespace, Context } from "@ory/keto-namespace-types"  class User implements Namespace {}  class Report implements Namespace {   related: {     finance: User[]     marketing: User[]     community: User[]     admin: User[]   }    permits = {     view: (ctx: Context): boolean => this.related.finance.includes(ctx.subject) || this.related.marketing.includes(ctx.subject) || this.related.community.includes(ctx.subject) || this.related.admin.includes(ctx.subject),     edit: (ctx: Context): boolean => this.related.admin.includes(ctx.subject)   } }

In this OPL code, we define a

Report

class that has relationships with four types of users:

finance

,

marketing

,

community

, and

admin

. The

permits

object within the

Report

class defines two permissions:

view

and

edit

. The

view

permission is granted if the subject is included in any of the user groups, while the

edit

permission is only granted if the subject is an

admin

. Please note that this is a simplified example and might need to be adjusted based on your specific requirements and the structure of your application. For more information on how to use OPL, you can refer to the [Ory documentation](https://www.ory.sh/docs/keto/reference/ory-permission-language).