"""
This module returns all pipelines used in the event of a pull request.
It also includes a function generating a PR trigger from a list of included and excluded paths.
"""

load(
    "scripts/drone/pipelines/test_frontend.star",
    "test_frontend",
)
load(
    "scripts/drone/pipelines/test_backend.star",
    "test_backend",
)
load(
    "scripts/drone/pipelines/integration_tests.star",
    "integration_tests",
)
load(
    "scripts/drone/pipelines/build.star",
    "build_e2e",
)
load(
    "scripts/drone/pipelines/verify_drone.star",
    "verify_drone",
)
load(
    "scripts/drone/pipelines/verify_starlark.star",
    "verify_starlark",
)
load(
    "scripts/drone/pipelines/docs.star",
    "docs_pipelines",
    "trigger_docs_pr",
)
load(
    "scripts/drone/pipelines/shellcheck.star",
    "shellcheck_pipeline",
)
load(
    "scripts/drone/pipelines/lint_backend.star",
    "lint_backend_pipeline",
)
load(
    "scripts/drone/pipelines/lint_frontend.star",
    "lint_frontend_pipeline",
)
load(
    "scripts/drone/pipelines/benchmarks.star",
    "integration_benchmarks",
)

ver_mode = "pr"
trigger = {
    "event": [
        "pull_request",
    ],
    "paths": {
        "exclude": [
            "*.md",
            "docs/**",
            "latest.json",
        ],
    },
}

def pr_pipelines():
    return [
        verify_drone(
            get_pr_trigger(
                include_paths = ["scripts/drone/**", ".drone.yml", ".drone.star"],
            ),
            ver_mode,
        ),
        verify_starlark(
            get_pr_trigger(
                include_paths = ["scripts/drone/**", ".drone.star"],
            ),
            ver_mode,
        ),
        test_frontend(
            get_pr_trigger(
                exclude_paths = ["pkg/**", "packaging/**", "go.sum", "go.mod"],
            ),
            ver_mode,
        ),
        lint_frontend_pipeline(
            get_pr_trigger(
                exclude_paths = ["pkg/**", "packaging/**", "go.sum", "go.mod"],
            ),
            ver_mode,
        ),
        test_backend(
            get_pr_trigger(
                include_paths = [
                    "pkg/**",
                    "packaging/**",
                    ".drone.yml",
                    "conf/**",
                    "go.sum",
                    "go.mod",
                    "public/app/plugins/**/plugin.json",
                    "devenv/**",
                ],
            ),
            ver_mode,
        ),
        lint_backend_pipeline(
            get_pr_trigger(
                include_paths = [
                    "pkg/**",
                    "packaging/**",
                    ".drone.yml",
                    "conf/**",
                    "go.sum",
                    "go.mod",
                    "public/app/plugins/**/plugin.json",
                    "devenv/**",
                    ".bingo/**",
                ],
            ),
            ver_mode,
        ),
        build_e2e(trigger, ver_mode),
        integration_tests(
            get_pr_trigger(
                include_paths = [
                    "pkg/**",
                    "packaging/**",
                    ".drone.yml",
                    "conf/**",
                    "go.sum",
                    "go.mod",
                    "public/app/plugins/**/plugin.json",
                ],
            ),
            prefix = ver_mode,
        ),
        docs_pipelines(ver_mode, trigger_docs_pr()),
        shellcheck_pipeline(),
        integration_benchmarks(
            prefix = ver_mode,
        ),
    ]

def get_pr_trigger(include_paths = None, exclude_paths = None):
    """Generates a trigger filter from the lists of included and excluded path patterns.

    This function is primarily intended to generate a trigger for code changes
    as the patterns 'docs/**' and '*.md' are always excluded.

    Args:
      include_paths: a list of path patterns using the same syntax as gitignore.
        Changes affecting files matching these path patterns trigger the pipeline.
      exclude_paths: a list of path patterns using the same syntax as gitignore.
        Changes affecting files matching these path patterns do not trigger the pipeline.

    Returns:
      Drone trigger.
    """
    paths_ex = ["docs/**", "*.md"]
    paths_in = []
    if include_paths:
        for path in include_paths:
            paths_in.extend([path])
    if exclude_paths:
        for path in exclude_paths:
            paths_ex.extend([path])
    return {
        "event": [
            "pull_request",
        ],
        "paths": {
            "exclude": paths_ex,
            "include": paths_in,
        },
    }