use clap::Args;
use serde::Serialize;

use homeboy::deploy::{self, ComponentDeployResult, DeployConfig, DeploySummary};
use homeboy::resolve::{infer_project_for_components, resolve_project_components};

use super::CmdResult;

#[derive(Args)]
pub struct DeployArgs {
    /// Project ID (or component ID - order is auto-detected)
    pub project_id: String,

    /// Component IDs to deploy (or project ID if first arg is a component)
    pub component_ids: Vec<String>,

    /// Explicit project ID (takes precedence over positional detection)
    #[arg(long, short = 'p')]
    pub project: Option<String>,

    /// Explicit component IDs (takes precedence over positional)
    #[arg(long, short = 'c')]
    pub component: Option<Vec<String>>,

    /// JSON input spec for bulk operations
    #[arg(long)]
    pub json: Option<String>,

    /// Deploy all configured components
    #[arg(long)]
    pub all: bool,

    /// Deploy only outdated components
    #[arg(long)]
    pub outdated: bool,

    /// Preview what would be deployed without executing
    #[arg(long)]
    pub dry_run: bool,

    /// Check component status without building or deploying
    #[arg(long, visible_alias = "status")]
    pub check: bool,

    /// Deploy even with uncommitted changes
    #[arg(long)]
    pub force: bool,
}

#[derive(Serialize)]

pub struct DeployOutput {
    pub command: String,
    pub project_id: String,
    pub all: bool,
    pub outdated: bool,
    pub dry_run: bool,
    pub check: bool,
    pub force: bool,
    pub results: Vec<ComponentDeployResult>,
    pub summary: DeploySummary,
}

pub fn run(mut args: DeployArgs, _global: &crate::commands::GlobalArgs) -> CmdResult<DeployOutput> {
    // Resolve project and component IDs based on flag/positional combinations
    let (project_id, component_ids) = match (&args.project, &args.component) {
        // Both flags provided - use them directly
        (Some(ref proj), Some(ref comps)) => (proj.clone(), comps.clone()),

        // Only --project flag - positionals are components
        (Some(ref proj), None) => {
            let mut comps = vec![args.project_id.clone()];
            comps.extend(args.component_ids.clone());
            (proj.clone(), comps)
        }

        // Only --component flag - resolve project from positional or inference
        (None, Some(ref comps)) => {
            let projects = homeboy::project::list_ids().unwrap_or_default();
            if projects.contains(&args.project_id) {
                (args.project_id.clone(), comps.clone())
            } else {
                // Try to infer project from components
                match infer_project_for_components(comps) {
                    Some(proj) => (proj, comps.clone()),
                    None => {
                        return Err(homeboy::Error::validation_invalid_argument(
                            "project_id",
                            "Could not infer project. Use --project flag or provide project as first argument.",
                            None,
                            None,
                        )
                        .into())
                    }
                }
            }
        }

        // No flags - use shared positional detection
        (None, None) => resolve_project_components(&args.project_id, &args.component_ids)?,
    };

    // Update args with resolved values
    args.project_id = project_id.clone();
    args.component_ids = component_ids;

    // Parse JSON input if provided
    if let Some(ref spec) = args.json {
        args.component_ids = deploy::parse_bulk_component_ids(spec)?;
    }

    // Build config and call core orchestration
    let config = DeployConfig {
        component_ids: args.component_ids.clone(),
        all: args.all,
        outdated: args.outdated,
        dry_run: args.dry_run,
        check: args.check,
        force: args.force,
        skip_build: false,
    };

    let result = deploy::run(&project_id, &config).map_err(|e| {
        if e.message.contains("No components configured for project") {
            e.with_hint(format!(
                "Run 'homeboy project components add {} <component-id>' to add components",
                project_id
            ))
            .with_hint("Run 'homeboy init' to see project context and available components")
        } else {
            e
        }
    })?;

    let exit_code = if result.summary.failed > 0 { 1 } else { 0 };

    Ok((
        DeployOutput {
            command: "deploy.run".to_string(),
            project_id: project_id.clone(),
            all: args.all,
            outdated: args.outdated,
            dry_run: args.dry_run,
            check: args.check,
            force: args.force,
            results: result.results,
            summary: result.summary,
        },
        exit_code,
    ))
}
