//! ref: composer/src/Composer/Command/ReinstallCommand.php

use crate::command::BaseCommand;
use crate::command::BaseCommandData;
use crate::command::base_command::base_command_initialize;
use crate::console::input::InputArgument;
use crate::console::input::InputOption;
use crate::dependency_resolver::Transaction;
use crate::dependency_resolver::operation::InstallOperation;
use crate::dependency_resolver::operation::UninstallOperation;
use crate::io::IOInterfaceImmutable;
use crate::package::base_package;
use crate::plugin::CommandEvent;
use crate::plugin::PluginEvents;
use crate::script::ScriptEvents;
use crate::util::Platform;
use anyhow::Result;
use shirabe_external_packages::composer::pcre::Preg;
use shirabe_external_packages::symfony::console::command::command::Command;
use shirabe_external_packages::symfony::console::input::InputInterface;
use shirabe_external_packages::symfony::console::output::OutputInterface;
use shirabe_php_shim::InvalidArgumentException;
use std::cell::RefCell;
use std::rc::Rc;

#[derive(Debug)]
pub struct ReinstallCommand {
    base_command_data: BaseCommandData,
}

impl Default for ReinstallCommand {
    fn default() -> Self {
        Self::new()
    }
}

impl ReinstallCommand {
    pub fn new() -> Self {
        let command = ReinstallCommand {
            base_command_data: BaseCommandData::new(None),
        };
        command
            .configure()
            .expect("ReinstallCommand::configure uses static, valid metadata");
        command
    }
}

impl Command for ReinstallCommand {
    fn configure(&self) -> anyhow::Result<()> {
        // TODO(cli-completion): suggest_prefer_install / suggest_installed_package_types / suggest_installed_package
        self.set_name("reinstall")?;
        self.set_description("Uninstalls and reinstalls the given package names");
        self.set_definition(&[
            InputOption::new("prefer-source", None, Some(InputOption::VALUE_NONE), "Forces installation from package sources when possible, including VCS information.", None).unwrap().into(),
            InputOption::new("prefer-dist", None, Some(InputOption::VALUE_NONE), "Forces installation from package dist (default behavior).", None).unwrap().into(),
            InputOption::new("prefer-install", None, Some(InputOption::VALUE_REQUIRED), "Forces installation from package dist|source|auto (auto chooses source for dev versions, dist for the rest).", None).unwrap().into(),
            InputOption::new("no-autoloader", None, Some(InputOption::VALUE_NONE), "Skips autoloader generation", None).unwrap().into(),
            InputOption::new("no-progress", None, Some(InputOption::VALUE_NONE), "Do not output download progress.", None).unwrap().into(),
            InputOption::new("optimize-autoloader", Some(shirabe_php_shim::PhpMixed::String("o".to_string())), Some(InputOption::VALUE_NONE), "Optimize autoloader during autoloader dump", None).unwrap().into(),
            InputOption::new("classmap-authoritative", Some(shirabe_php_shim::PhpMixed::String("a".to_string())), Some(InputOption::VALUE_NONE), "Autoload classes from the classmap only. Implicitly enables `--optimize-autoloader`.", None).unwrap().into(),
            InputOption::new("apcu-autoloader", None, Some(InputOption::VALUE_NONE), "Use APCu to cache found/not-found classes.", None).unwrap().into(),
            InputOption::new("apcu-autoloader-prefix", None, Some(InputOption::VALUE_REQUIRED), "Use a custom prefix for the APCu autoloader cache. Implicitly enables --apcu-autoloader", None).unwrap().into(),
            InputOption::new("ignore-platform-req", None, Some(InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY), "Ignore a specific platform requirement (php & ext- packages).", None).unwrap().into(),
            InputOption::new("ignore-platform-reqs", None, Some(InputOption::VALUE_NONE), "Ignore all platform requirements (php & ext- packages).", None).unwrap().into(),
            InputOption::new("type", None, Some(InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY), "Filter packages to reinstall by type(s)", None).unwrap().into(),
            InputArgument::new("packages", Some(InputArgument::IS_ARRAY), "List of package names to reinstall, can include a wildcard (*) to match any substring.", None).unwrap().into(),
        ]);
        self.set_help(
            "The <info>reinstall</info> command looks up installed packages by name,\n\
            uninstalls them and reinstalls them. This lets you do a clean install\n\
            of a package if you messed with its files, or if you wish to change\n\
            the installation type using --prefer-install.\n\n\
            <info>shirabe reinstall acme/foo \"acme/bar-*\"</info>\n\n\
            Read more at https://getcomposer.org/doc/03-cli.md#reinstall",
        );
        Ok(())
    }

    fn execute(
        &self,
        input: Rc<RefCell<dyn InputInterface>>,
        output: Rc<RefCell<dyn OutputInterface>>,
    ) -> anyhow::Result<i64> {
        let composer = self.require_composer(None, None)?;
        let composer = crate::composer::composer_full(&composer);
        let io = self.get_io();

        let repository_manager = composer.get_repository_manager().clone();
        let repository_manager = repository_manager.borrow();
        let local_repo = repository_manager.get_local_repository();
        let mut packages_to_reinstall: Vec<crate::package::PackageInterfaceHandle> = vec![];
        let mut package_names_to_reinstall: Vec<String> = vec![];

        let type_option = input.borrow().get_option("type")?;
        let type_count = type_option.as_list().map_or(0, |l| l.len());
        let packages_arg = input.borrow().get_argument("packages")?;
        let packages_count = packages_arg.as_list().map_or(0, |l| l.len());

        if type_count > 0 {
            if packages_count > 0 {
                return Err(InvalidArgumentException {
                    message:
                        "You cannot specify package names and filter by type at the same time."
                            .to_string(),
                    code: 0,
                }
                .into());
            }
            let filter_types: Vec<String> = type_option
                .as_list()
                .map(|l| {
                    l.iter()
                        .filter_map(|v| v.as_string().map(|s| s.to_string()))
                        .collect()
                })
                .unwrap_or_default();
            for package in local_repo.get_canonical_packages()? {
                if filter_types.contains(&package.get_type()) {
                    package_names_to_reinstall.push(package.get_name());
                    packages_to_reinstall.push(package);
                }
            }
        } else {
            if packages_count == 0 {
                return Err(InvalidArgumentException {
                    message: "You must pass one or more package names to be reinstalled."
                        .to_string(),
                    code: 0,
                }
                .into());
            }
            let patterns: Vec<String> = packages_arg
                .as_list()
                .map(|l| {
                    l.iter()
                        .filter_map(|v| v.as_string().map(|s| s.to_string()))
                        .collect()
                })
                .unwrap_or_default();
            for pattern in &patterns {
                let pattern_regexp = base_package::package_name_to_regexp(pattern);
                let mut matched = false;
                for package in local_repo.get_canonical_packages()? {
                    if Preg::is_match(&pattern_regexp, &package.get_name()) {
                        matched = true;
                        package_names_to_reinstall.push(package.get_name());
                        packages_to_reinstall.push(package);
                    }
                }
                if !matched {
                    io.write_error(&format!("<warning>Pattern \"{}\" does not match any currently installed packages.</warning>", pattern));
                }
            }
        }

        if packages_to_reinstall.is_empty() {
            io.write_error("<warning>Found no packages to reinstall, aborting.</warning>");
            return Ok(1);
        }

        let mut uninstall_operations: Vec<UninstallOperation> = vec![];
        for package in packages_to_reinstall {
            uninstall_operations.push(UninstallOperation::new(package));
        }

        let present_packages = local_repo.get_packages()?;
        let result_packages: Vec<crate::package::PackageInterfaceHandle> =
            present_packages.to_vec();
        let present_packages: Vec<crate::package::PackageInterfaceHandle> = present_packages
            .into_iter()
            .filter(|package| !package_names_to_reinstall.contains(&package.get_name()))
            .collect();

        let transaction = Transaction::new(present_packages, result_packages);
        let install_operations = transaction.get_operations();

        let mut install_order = indexmap::IndexMap::new();
        for (index, op) in install_operations.iter().enumerate() {
            if let Some(install_op) = op.as_any().downcast_ref::<InstallOperation>()
                && install_op.get_package().as_alias().is_none()
            {
                install_order.insert(install_op.get_package().get_name(), index);
            }
        }

        uninstall_operations.sort_by(|a, b| {
            let a_order = install_order
                .get(&a.get_package().get_name())
                .copied()
                .unwrap_or(0);
            let b_order = install_order
                .get(&b.get_package().get_name())
                .copied()
                .unwrap_or(0);
            b_order.cmp(&a_order)
        });

        // TODO(plugin): dispatch CommandEvent
        let command_event =
            CommandEvent::new(PluginEvents::COMMAND, "reinstall", input.clone(), output);
        let event_dispatcher = composer.get_event_dispatcher();
        event_dispatcher
            .borrow_mut()
            .dispatch(Some(command_event.get_name()), None);

        let config = composer.get_config();
        let (prefer_source, prefer_dist) =
            self.get_preferred_install_options(&config.borrow(), input.clone(), false)?;

        let installation_manager = composer.get_installation_manager().clone();
        let download_manager = composer.get_download_manager();
        let package = composer.get_package();

        installation_manager.borrow_mut().set_output_progress(
            !input
                .borrow()
                .get_option("no-progress")?
                .as_bool()
                .unwrap_or(false),
        );
        if input
            .borrow()
            .get_option("no-plugins")?
            .as_bool()
            .unwrap_or(false)
        {
            installation_manager.borrow_mut().disable_plugins();
        }

        download_manager
            .borrow_mut()
            .set_prefer_source(prefer_source);
        download_manager.borrow_mut().set_prefer_dist(prefer_dist);

        let dev_mode = local_repo.get_dev_mode().unwrap_or(true);

        Platform::put_env("COMPOSER_DEV_MODE", if dev_mode { "1" } else { "0" });
        event_dispatcher.borrow_mut().dispatch_script(
            ScriptEvents::PRE_INSTALL_CMD,
            dev_mode,
            vec![],
            indexmap::IndexMap::new(),
        );

        // PHP: $installationManager->execute($localRepo, $uninstallOperations, $devMode);
        //      $installationManager->execute($localRepo, $installOperations, $devMode);
        // TODO(phase-c): two blockers. (1) execute() wants `&mut dyn InstalledRepositoryInterface`,
        // but local_repo is a RepositoryInterfaceHandle that exposes no raw &mut
        // InstalledRepositoryInterface view (only per-method helpers). (2) InstallationManager::
        // execute is itself deferred (its operation/promise machinery stays todo!() — see
        // installation_manager.rs).
        let _ = (
            uninstall_operations,
            install_operations,
            dev_mode,
            local_repo.clone(),
            &installation_manager,
        );
        // installation_manager.execute(local_repo_mut, uninstall_ops_boxed, dev_mode, true, false);
        // installation_manager.execute(local_repo_mut, install_ops_boxed, dev_mode, true, false);

        if !input
            .borrow()
            .get_option("no-autoloader")?
            .as_bool()
            .unwrap_or(false)
        {
            let optimize = input
                .borrow()
                .get_option("optimize-autoloader")?
                .as_bool()
                .unwrap_or(false)
                || config
                    .borrow_mut()
                    .get("optimize-autoloader")
                    .as_bool()
                    .unwrap_or(false);
            let authoritative = input
                .borrow()
                .get_option("classmap-authoritative")?
                .as_bool()
                .unwrap_or(false)
                || config
                    .borrow_mut()
                    .get("classmap-authoritative")
                    .as_bool()
                    .unwrap_or(false);
            let apcu_prefix = input
                .borrow()
                .get_option("apcu-autoloader-prefix")?
                .as_string()
                .map(|s| s.to_string());
            let apcu = apcu_prefix.is_some()
                || input
                    .borrow()
                    .get_option("apcu-autoloader")?
                    .as_bool()
                    .unwrap_or(false)
                || config
                    .borrow_mut()
                    .get("apcu-autoloader")
                    .as_bool()
                    .unwrap_or(false);

            // PHP: $generator = $composer->getAutoloadGenerator(); $generator->setClassMapAuthoritative(...);
            //      $generator->setApcu(...); $generator->setPlatformRequirementFilter(...);
            //      $generator->dump($config, $localRepo, $package, $installationManager, 'composer', $optimize);
            // TODO(phase-c): AutoloadGenerator::dump (and the setters) take &mut self and dump wants
            // `local_repo: &mut dyn InstalledRepositoryInterface`, which the RepositoryInterfaceHandle
            // does not expose as a raw &mut view (the same handle blocker as execute above). Wiring
            // this needs that accessor plus completing the dump call's remaining arguments.
            let _ = (
                authoritative,
                apcu,
                apcu_prefix.clone(),
                self.get_platform_requirement_filter(input)?,
                optimize,
                &*config.borrow(),
                local_repo,
                package,
                installation_manager,
            );
            // composer.get_autoload_generator_mut().set_class_map_authoritative(authoritative);
            // composer.get_autoload_generator_mut().set_apcu(apcu, apcu_prefix.clone());
            // composer.get_autoload_generator_mut().set_platform_requirement_filter(...);
            // composer.get_autoload_generator_mut().dump(...);
        }

        event_dispatcher.borrow_mut().dispatch_script(
            ScriptEvents::POST_INSTALL_CMD,
            dev_mode,
            vec![],
            indexmap::IndexMap::new(),
        );

        Ok(0)
    }

    fn initialize(
        &self,
        input: Rc<RefCell<dyn InputInterface>>,
        output: Rc<RefCell<dyn OutputInterface>>,
    ) -> anyhow::Result<()> {
        base_command_initialize(self, input, output)
    }

    shirabe_external_packages::delegate_command_trait_impls_to_inner!(base_command_data);
}

impl BaseCommand for ReinstallCommand {
    fn command_data(
        &self,
    ) -> &shirabe_external_packages::symfony::console::command::command::CommandData {
        self.base_command_data.command_data()
    }

    crate::delegate_base_command_trait_impls_to_inner!(base_command_data);
}