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use super::{Lockfile, Manifest, LalResult};
use input;

/// Verifies that `./INPUT` satisfies all strictness conditions.
///
/// This first verifies that there are no key mismatches between `defaultConfig` and
/// `configurations` in the manifest.
///
/// Once this is done, `INPUT` is analysed thoroughly via each components lockfiles.
/// Missing dependencies, or multiple versions dependend on implicitly are both
/// considered errors for verify, as are having custom versions in `./INPUT`.
///
/// This function is meant to be a helper for when we want official builds, but also
/// a way to tell developers that they are using things that differ from what jenkins
/// would use.
///
/// A simple verify was added to aid the workflow of stashed components.
/// Users can use `lal verify --simple` or `lal build -s` aka. `--simple-verify`,
/// instead of having to use `lal build --force` when just using stashed components.
/// This avoids problems with different environments going undetected.
pub fn verify(m: &Manifest, env: &str, simple: bool) -> LalResult<()> {
    // 1. Verify that the manifest is sane
    m.verify()?;

    // 2. dependencies in `INPUT` match `manifest.json`.
    if m.dependencies.is_empty() {
        // special case where lal fetch is not required and so INPUT may not exist
        // nothing needs to be verified in this case, so allow missing INPUT
        return Ok(());
    }
    input::verify_dependencies_present(m)?;

    // get data for big verify steps
    let lf = Lockfile::default().populate_from_input()?;

    // 3. verify the root level dependencies match the manifest
    if !simple {
        input::verify_global_versions(&lf, m)?;
    }

    // 4. the dependency tree is flat, and deps use only global deps
    if !simple {
        input::verify_consistent_dependency_versions(&lf, m)?;
    }

    // 5. verify all components are built in the same environment
    input::verify_environment_consistency(&lf, env)?;

    info!("Dependencies fully verified");
    Ok(())
}