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"""
Linear API simulator.
Provides realistic mock responses for Linear API actions (GraphQL).
"""
from typing import Optional
from .base import BaseSimulator
from datetime import datetime
import uuid
class LinearSimulator(BaseSimulator):
"""Simulator for Linear API (GraphQL)."""
def __init__(self):
super().__init__('linear')
def load_mock_responses(self):
"""Load Linear mock response templates."""
self.mock_responses = {
'create_issue': self._create_issue_template,
'read_issues': self._read_issues_template,
'update_issue': self._update_issue_template,
'add_comment': self._add_comment_template,
'get_issue': self._get_issue_template,
'search_issues': self._search_issues_template,
}
def get_required_permissions(self, action: str) -> set[str]:
"""Get required Linear permissions for an action."""
permissions_map = {
'create_issue': {'write'},
'read_issues': {'read'},
'update_issue': {'write'},
'add_comment': {'write'},
'get_issue': {'read'},
'search_issues': {'read'},
}
return permissions_map.get(action, set())
def validate_params(self, action: str, params: dict) -> tuple[bool, Optional[str]]:
"""Validate parameters for Linear actions."""
if action == 'create_issue':
required = {'title', 'teamId'}
missing = required - set(params.keys())
if missing:
return False, f"Missing required parameters: {missing}"
elif action == 'read_issues':
# No required params - will return all issues
pass
elif action == 'update_issue':
required = {'id'}
missing = required - set(params.keys())
if missing:
return False, f"Missing required parameters: {missing}"
# Must have at least one field to update
updateable = {'title', 'description', 'stateId', 'priority', 'assigneeId'}
if not any(k in params for k in updateable):
return False, "Must provide at least one field to update"
elif action == 'add_comment':
required = {'issueId', 'body'}
missing = required - set(params.keys())
if missing:
return False, f"Missing required parameters: {missing}"
elif action == 'get_issue':
required = {'id'}
missing = required - set(params.keys())
if missing:
return False, f"Missing required parameters: {missing}"
elif action == 'search_issues':
required = {'query'}
missing = required - set(params.keys())
if missing:
return False, f"Missing required parameters: {missing}"
else:
return False, f"Unknown action: {action}"
return True, None
def generate_mock_response(self, action: str, params: dict) -> dict:
"""Generate realistic Linear API response."""
if action not in self.mock_responses:
raise ValueError(f"Unknown action: {action}")
template_func = self.mock_responses[action]
return template_func(params)
def _generate_issue_id(self) -> str:
"""Generate a Linear-style issue ID."""
return str(uuid.uuid4())
def _create_issue_template(self, params: dict) -> dict:
"""Mock response for creating an issue."""
issue_id = self._generate_issue_id()
issue_number = 1234 # Mock issue number
return {
"data": {
"issueCreate": {
"success": True,
"issue": {
"id": issue_id,
"createdAt": datetime.utcnow().isoformat() + "Z",
"updatedAt": datetime.utcnow().isoformat() + "Z",
"number": issue_number,
"title": params['title'],
"description": params.get('description', ''),
"priority": params.get('priority', 0),
"estimate": params.get('estimate'),
"team": {
"id": params['teamId'],
"name": "Engineering",
"key": "ENG"
},
"state": {
"id": params.get('stateId', 'state-backlog'),
"name": "Backlog",
"type": "backlog"
},
"assignee": {
"id": params.get('assigneeId', 'unassigned'),
"name": "Unassigned" if not params.get('assigneeId') else "Team Member"
} if params.get('assigneeId') else None,
"labels": {
"nodes": []
},
"url": f"https://linear.app/team/issue/ENG-{issue_number}"
}
}
}
}
def _read_issues_template(self, params: dict) -> dict:
"""Mock response for reading issues."""
# Generate a few mock issues
issues = []
for i in range(3):
issue_id = self._generate_issue_id()
issues.append({
"id": issue_id,
"createdAt": datetime.utcnow().isoformat() + "Z",
"updatedAt": datetime.utcnow().isoformat() + "Z",
"number": 1230 + i,
"title": f"Sample issue {i+1}",
"description": f"This is a sample issue for testing purposes",
"priority": 1,
"state": {
"id": "state-in-progress" if i == 0 else "state-backlog",
"name": "In Progress" if i == 0 else "Backlog",
"type": "started" if i == 0 else "backlog"
},
"team": {
"id": params.get('teamId', 'team-eng'),
"name": "Engineering",
"key": "ENG"
},
"assignee": {
"id": f"user-{i}",
"name": f"Developer {i+1}"
} if i < 2 else None,
"url": f"https://linear.app/team/issue/ENG-{1230+i}"
})
return {
"data": {
"issues": {
"nodes": issues,
"pageInfo": {
"hasNextPage": False,
"endCursor": None
}
}
}
}
def _update_issue_template(self, params: dict) -> dict:
"""Mock response for updating an issue."""
return {
"data": {
"issueUpdate": {
"success": True,
"issue": {
"id": params['id'],
"updatedAt": datetime.utcnow().isoformat() + "Z",
"title": params.get('title', 'Updated Issue'),
"description": params.get('description', ''),
"priority": params.get('priority', 1),
"state": {
"id": params.get('stateId', 'state-in-progress'),
"name": "In Progress"
},
"assignee": {
"id": params.get('assigneeId', 'user-1'),
"name": "Assigned User"
} if params.get('assigneeId') else None
}
}
}
}
def _add_comment_template(self, params: dict) -> dict:
"""Mock response for adding a comment to an issue."""
comment_id = self._generate_issue_id()
return {
"data": {
"commentCreate": {
"success": True,
"comment": {
"id": comment_id,
"createdAt": datetime.utcnow().isoformat() + "Z",
"updatedAt": datetime.utcnow().isoformat() + "Z",
"body": params['body'],
"user": {
"id": "user-current",
"name": "Current User",
"email": "user@company.com"
},
"issue": {
"id": params['issueId'],
"title": "Related Issue"
}
}
}
}
}
def _get_issue_template(self, params: dict) -> dict:
"""Mock response for getting a specific issue."""
return {
"data": {
"issue": {
"id": params['id'],
"createdAt": "2025-11-15T10:00:00.000Z",
"updatedAt": datetime.utcnow().isoformat() + "Z",
"number": 1234,
"title": "Implement new feature",
"description": "We need to implement this new feature for our users.\n\nAcceptance criteria:\n- Feature works as expected\n- Tests are written\n- Documentation is updated",
"priority": 2,
"estimate": 5,
"state": {
"id": "state-in-progress",
"name": "In Progress",
"type": "started",
"color": "#f2c94c"
},
"team": {
"id": "team-eng",
"name": "Engineering",
"key": "ENG"
},
"assignee": {
"id": "user-1",
"name": "Jane Developer",
"email": "jane@company.com",
"avatarUrl": "https://avatar.linear.app/user-1"
},
"creator": {
"id": "user-pm",
"name": "Product Manager"
},
"labels": {
"nodes": [
{
"id": "label-feature",
"name": "feature",
"color": "#4ea7fc"
}
]
},
"comments": {
"nodes": [
{
"id": "comment-1",
"body": "Working on this now",
"createdAt": "2025-11-20T14:30:00.000Z",
"user": {
"name": "Jane Developer"
}
}
]
},
"url": "https://linear.app/team/issue/ENG-1234"
}
}
}
def _search_issues_template(self, params: dict) -> dict:
"""Mock response for searching issues."""
# Simple search - return one matching issue
return {
"data": {
"issueSearch": {
"nodes": [
{
"id": self._generate_issue_id(),
"number": 1235,
"title": f"Search result for: {params['query']}",
"description": f"This issue matches your search query",
"state": {
"name": "Todo"
},
"team": {
"key": "ENG"
},
"url": "https://linear.app/team/issue/ENG-1235"
}
],
"pageInfo": {
"hasNextPage": False
}
}
}
}
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