# Automatic merging of approved PRs for Zebra
#
# This file can be edited and validated using:
# https://dashboard.mergify.com/github/ZcashFoundation/repo/zebra/config-editor

# Set the maximum number of PRs that can be checked in parallel in a queue
merge_queue:
  max_parallel_checks: 5

# Provides a means to set configuration values that act as fallbacks
# for queue_rules and pull_request_rules
defaults:
  # Define our default queue rules
  queue_rule:
    # Allow to update/rebase the original pull request if possible to check its mergeability,
    # and it does not create a draft PR if not needed
    allow_inplace_checks: True
    # Wait for about 10% of the time it takes Rust PRs to run CI (~1h)
    batch_max_wait_time: "10 minutes"
    queue_conditions:
      # Mergify automatically applies status check, approval, and conversation rules,
      # which are the same as the GitHub main branch protection rules
      # https://docs.mergify.com/conditions/#about-branch-protection
      - base=main
      # is not in draft
      - -draft
      # does not include the do-not-merge label
      - label!=do-not-merge
      # has at least one approving reviewer
      - "#approved-reviews-by >= 1"


# Allows to define the rules that reign over our merge queues
queue_rules:
  - name: urgent
    batch_size: 5
    # Wait a short time to embark hotfixes together in a merge train
    batch_max_wait_time: "2 minutes"
    queue_conditions:
      # is labeled with Critical priority
      - 'label~=^P-Critical'

  - name: batched
    batch_size: 20

pull_request_rules:
  - name: move to any queue if GitHub Rulesets are satisfied
    conditions: []
    actions:
      queue:

# Rules that will determine which priority a pull request has when entering
# our merge queue
#
# These rules are checked in order, the first one to be satisfied applies
priority_rules:
  - name: urgent
    conditions:
      # is labeled with Critical priority
      - 'label~=^P-Critical'
    allow_checks_interruption: true
    priority: high

  - name: low
    conditions:
      # is labeled with Optional or Low priority
      - 'label~=^P-(Optional|Low)'
    allow_checks_interruption: true
    priority: low