Update subcommand

src/commands/mod.rs

@@ -16,7 +16,7 @@ pub use manifest_to_json::ManifestToJsonSubcommand;
 pub use package::PackageSubcommand;
 pub use publish::PublishSubcommand;
 pub use search::SearchSubcommand;
-pub use update::UpdateSubcommand;
+pub use update::{PackageSpec, UpdateSubcommand};
 
 use structopt::StructOpt;
 
@@ -37,7 +37,7 @@ impl Args {
             Subcommand::Init(subcommand) => subcommand.run(),
             Subcommand::Login(subcommand) => subcommand.run(),
             Subcommand::Logout(subcommand) => subcommand.run(),
-            Subcommand::Update(subcommand) => subcommand.run(),
+            Subcommand::Update(subcommand) => subcommand.run(self.global),
             Subcommand::Search(subcommand) => subcommand.run(),
             Subcommand::Package(subcommand) => subcommand.run(),
             Subcommand::Install(subcommand) => subcommand.run(self.global),

src/commands/update.rs

@@ -1,11 +1,308 @@
+use std::collections::BTreeSet;
+use std::convert::TryInto;
+use std::path::PathBuf;
+use std::str::FromStr;
+use std::time::Duration;
+
+use crate::installation::InstallationContext;
+use crate::lockfile::Lockfile;
+use crate::manifest::Manifest;
+use crate::package_id::PackageId;
+use crate::package_name::PackageName;
+use crate::package_req::PackageReq;
+use crate::package_source::{PackageSource, PackageSourceMap, Registry, TestRegistry};
+use crate::{resolution, GlobalOptions};
+use crossterm::style::{Attribute, Color, SetAttribute, SetForegroundColor};
+use indicatif::{ProgressBar, ProgressStyle};
 use structopt::StructOpt;
 
 /// Update all of the dependencies of this project.
 #[derive(Debug, StructOpt)]
-pub struct UpdateSubcommand {}
+pub struct UpdateSubcommand {
+    /// Path to the project to publish.
+    #[structopt(long = "project-path", default_value = ".")]
+    pub project_path: PathBuf,
+
+    /// An optional list of dependencies to update.
+    /// They must be valid package name with an optional version requirement.
+    pub package_specs: Vec<PackageSpec>,
+}
 
 impl UpdateSubcommand {
-    pub fn run(self) -> anyhow::Result<()> {
-        todo!("The 'update' subcommand")
+    pub fn run(self, global: GlobalOptions) -> anyhow::Result<()> {
+        let manifest = Manifest::load(&self.project_path)?;
+
+        let lockfile = match Lockfile::load(&self.project_path)? {
+            Some(lockfile) => lockfile,
+            None => Lockfile::from_manifest(&manifest),
+        };
+
+        let default_registry: Box<PackageSource> = if global.test_registry {
+            Box::new(PackageSource::TestRegistry(TestRegistry::new(
+                &manifest.package.registry,
+            )))
+        } else {
+            Box::new(PackageSource::Registry(Registry::from_registry_spec(
+                &manifest.package.registry,
+            )?))
+        };
+
+        let mut package_sources = PackageSourceMap::new(default_registry);
+        package_sources.add_fallbacks()?;
+
+        // If the user didn't specify any targets, then update all of the packages.
+        // Otherwise, find the target packages to update.
+        let try_to_use = if self.package_specs.is_empty() {
+            println!(
+                "{}   Selected {} all dependencies to try update",
+                SetForegroundColor(Color::DarkGreen),
+                SetForegroundColor(Color::Reset)
+            );
+
+            BTreeSet::new()
+        } else {
+            let try_to_use: BTreeSet<PackageId> = lockfile
+                .as_ids()
+                // We update the target packages by removing the package from the list of packages to try to keep.
+                .filter(|package_id| !self.given_package_id_satisifies_targets(package_id))
+                .collect();
+
+            println!(
+                "{}   Selected {}{} dependencies to try update",
+                SetForegroundColor(Color::DarkGreen),
+                SetForegroundColor(Color::Reset),
+                lockfile.packages.len() - try_to_use.len(),
+            );
+
+            try_to_use
+        };
+
+        let progress = ProgressBar::new(0)
+            .with_style(
+                ProgressStyle::with_template("{spinner:.cyan}{wide_msg}")?.tick_chars("⠁⠈⠐⠠⠄⠂ "),
+            )
+            .with_message(format!(
+                "{} Resolving {}new dependencies...",
+                SetForegroundColor(Color::DarkGreen),
+                SetForegroundColor(Color::Reset)
+            ));
+
+        let resolved_graph = resolution::resolve(&manifest, &try_to_use, &package_sources)?;
+
+        progress.println(format!(
+            "{}   Resolved {}{} total dependencies",
+            SetForegroundColor(Color::DarkGreen),
+            SetForegroundColor(Color::Reset),
+            resolved_graph.activated.len() - 1
+        ));
+
+        progress.enable_steady_tick(Duration::from_millis(100));
+        progress.suspend(|| {
+            let dependency_changes =
+                generate_depedency_changes(&lockfile.as_ids().collect(), &resolved_graph.activated);
+            render_update_difference(&dependency_changes);
+        });
+
+        Lockfile::from_resolve(&resolved_graph).save(&self.project_path)?;
+
+        progress.println(format!(
+            "{}    Updated {}lockfile",
+            SetForegroundColor(Color::DarkGreen),
+            SetForegroundColor(Color::Reset)
+        ));
+
+        let root_package_id = manifest.package_id();
+        let installation_context = InstallationContext::new(
+            &self.project_path,
+            manifest.place.shared_packages,
+            manifest.place.server_packages,
+        );
+
+        progress.set_message(format!(
+            "{}  Cleaning {}package destination...",
+            SetForegroundColor(Color::DarkGreen),
+            SetForegroundColor(Color::Reset)
+        ));
+
+        installation_context.clean()?;
+
+        progress.println(format!(
+            "{}    Cleaned {}package destination",
+            SetForegroundColor(Color::DarkGreen),
+            SetForegroundColor(Color::Reset)
+        ));
+
+        progress.finish_with_message(format!(
+            "{}{}  Starting installation {}",
+            SetAttribute(Attribute::Bold),
+            SetForegroundColor(Color::DarkGreen),
+            SetForegroundColor(Color::Reset)
+        ));
+
+        installation_context.install(package_sources, root_package_id, resolved_graph)?;
+
+        Ok(())
+    }
+
+    fn given_package_id_satisifies_targets(&self, package_id: &PackageId) -> bool {
+        self.package_specs
+            .iter()
+            .any(|target_package| match target_package {
+                PackageSpec::Named(named_target) => package_id.name() == named_target,
+                PackageSpec::Required(required_target) => {
+                    required_target.matches(package_id.name(), package_id.version())
+                }
+            })
+    }
+}
+
+#[derive(Debug, PartialEq, Eq, Hash)]
+pub enum PackageSpec {
+    Named(PackageName),
+    Required(PackageReq),
+}
+
+impl FromStr for PackageSpec {
+    type Err = anyhow::Error;
+
+    fn from_str(value: &str) -> anyhow::Result<Self> {
+        if let Ok(package_req) = value.parse() {
+            Ok(PackageSpec::Required(package_req))
+        } else if let Ok(package_name) = value.parse() {
+            Ok(PackageSpec::Named(package_name))
+        } else {
+            anyhow::bail!(
+                "Was unable to parse {} into a package requirement or a package name!",
+                value
+            )
+        }
+    }
+}
+
+enum DependencyChange {
+    Added(PackageId),
+    Removed(PackageId),
+    Updated { from: PackageId, to: PackageId },
+    Downgrade { from: PackageId, to: PackageId },
+}
+
+fn generate_depedency_changes(
+    old_dependencies: &BTreeSet<PackageId>,
+    new_dependencies: &BTreeSet<PackageId>,
+) -> Vec<DependencyChange> {
+    let added_packages = new_dependencies.difference(old_dependencies);
+    let removed_packages = old_dependencies.difference(new_dependencies);
+    let changed_dependencies: BTreeSet<&PackageName> = added_packages
+        .clone()
+        .chain(removed_packages.clone())
+        .map(|package| package.name())
+        .collect();
+
+    let mut dependency = Vec::new();
+
+    for dependency_name in changed_dependencies {
+        let matching_packages_removed = removed_packages
+            .clone()
+            .filter(|x| *x.name() == *dependency_name);
+        let matching_packages_added = added_packages
+            .clone()
+            .filter(|x| *x.name() == *dependency_name);
+
+        match (
+            matching_packages_added.clone().count(),
+            matching_packages_removed.clone().count(),
+        ) {
+            (1, 1) => {
+                // We know for certain that there is only one item in the iterator.
+                let package_added = matching_packages_added.last().unwrap();
+                let package_removed = matching_packages_removed.last().unwrap();
+
+                if package_added.gt(package_removed) {
+                    dependency.push(DependencyChange::Updated {
+                        from: package_removed.clone(),
+                        to: package_added.clone(),
+                    });
+                } else {
+                    dependency.push(DependencyChange::Downgrade {
+                        from: package_added.clone(),
+                        to: package_removed.clone(),
+                    });
+                }
+            }
+            (0, 1) => {
+                // We know for certain that there is only one item in the iterator.
+                let package_removed = matching_packages_removed.last().unwrap();
+                dependency.push(DependencyChange::Removed(package_removed.clone()));
+            }
+            (1, 0) => {
+                // We know for certain that there is only one item in the iterator.
+                let package_added = matching_packages_added.last().unwrap();
+                dependency.push(DependencyChange::Added(package_added.clone()));
+            }
+            (0, 0) => panic!("Impossible for the package name {} to not be removed or added if found in earlier.", dependency_name),
+            (_, _) => {
+                dependency.extend(matching_packages_added.map(|package| DependencyChange::Added(package.clone())));
+                dependency.extend(matching_packages_removed.map(|package| DependencyChange::Removed(package.clone())));
+            }
+        }
+    }
+
+    dependency
+}
+
+fn render_update_difference(dependency_changes: &[DependencyChange]) {
+    if dependency_changes.is_empty() {
+        return println!(
+            "{} No Dependency changes{}",
+            SetForegroundColor(Color::DarkGreen),
+            SetForegroundColor(Color::Reset)
+        );
+    }
+
+    println!(
+        "{} Dependency changes{}",
+        SetForegroundColor(Color::DarkGreen),
+        SetForegroundColor(Color::Reset)
+    );
+
+    for dependency_change in dependency_changes {
+        match dependency_change {
+            DependencyChange::Added(package_id) => {
+                println!(
+                    "{}      Added {}{} v{}",
+                    SetForegroundColor(Color::DarkGreen),
+                    SetForegroundColor(Color::Reset),
+                    package_id.name(),
+                    package_id.version()
+                );
+            }
+            DependencyChange::Removed(package_id) => {
+                println!(
+                    "{}    Removed {}{} v{}",
+                    SetForegroundColor(Color::DarkRed),
+                    SetForegroundColor(Color::Reset),
+                    package_id.name(),
+                    package_id.version()
+                );
+            }
+            DependencyChange::Updated { from, to } => {
+                println!(
+                    "{}    Updated {}{} from v{} to v{}",
+                    SetForegroundColor(Color::DarkCyan),
+                    SetForegroundColor(Color::Reset),
+                    from.name(),
+                    from.version(),
+                    to.version()
+                );
+            }
+            DependencyChange::Downgrade { from, to } => println!(
+                "{} Downgraded {}{} from v{} to v{}",
+                SetForegroundColor(Color::DarkYellow),
+                SetForegroundColor(Color::Reset),
+                from.name(),
+                from.version(),
+                to.version()
+            ),
+        }
     }
 }

src/lockfile.rs

@@ -102,6 +102,15 @@ impl Lockfile {
 
         Ok(())
     }
+
+    pub fn as_ids(&self) -> impl Iterator<Item = PackageId> + '_ {
+        self.packages.iter().map(|lock_package| match lock_package {
+            LockPackage::Registry(lock_package) => {
+                PackageId::new(lock_package.name.clone(), lock_package.version.clone())
+            }
+            LockPackage::Git(_) => todo!(),
+        })
+    }
 }
 
 #[derive(Debug, Serialize, Deserialize)]

test-projects/diamond-graph/direct-dependency-a/0.1.0/default.project.json

@@ -0,0 +1,9 @@
+{
+	"name": "direct-dependency-a",
+	"tree": {
+		"Packages": {
+			"$path": "Packages"
+		},
+		"$path": "src"
+	}
+}

test-projects/diamond-graph/direct-dependency-a/0.1.0/src/init.lua

@@ -0,0 +1,3 @@
+local Indirect = require(script.Parent.Indirect)
+
+return if Indirect == 420 then "Bingo!" else "Naw..."

test-projects/diamond-graph/direct-dependency-a/0.1.0/wally.toml

@@ -0,0 +1,9 @@
+[package]
+name = "diamond-graph/direct-dependency-a"
+version = "0.1.0"
+license = "MIT"
+realm = "server"
+registry = "test-registries/primary-registry"
+
+[server-dependencies]
+Indirect = "diamond-graph/[email protected]"

test-projects/diamond-graph/direct-dependency-a/0.1.1/default.project.json

@@ -0,0 +1,9 @@
+{
+	"name": "direct-dependency-a",
+	"tree": {
+		"Packages": {
+			"$path": "Packages"
+		},
+		"$path": "src"
+	}
+}

test-projects/diamond-graph/direct-dependency-a/0.1.1/src/init.lua

@@ -0,0 +1,3 @@
+local Indirect = require(script.Parent.Indirect)
+
+return if Indirect == 420 then "Bingo!" else "Naw..."

test-projects/diamond-graph/direct-dependency-a/0.1.1/wally.toml

@@ -0,0 +1,9 @@
+[package]
+name = "diamond-graph/direct-dependency-a"
+version = "0.1.1"
+license = "MIT"
+realm = "server"
+registry = "test-registries/primary-registry"
+
+[server-dependencies]
+Indirect = "diamond-graph/[email protected]"