pub mod api;

use std::sync::Arc;

use anyhow::Result;
use colored::Colorize;
use serde_json::{json, Value};
use toon_format::encode_default as toon_encode;

use crate::config::OutputFormat;
use crate::execution::{fan_out, ExecutionTarget};
use crate::render;
use api::{ContextualDataApi, ContextualDataIntegration};

fn item_to_json(item: &ContextualDataIntegration, include_profile: bool, profile: &str) -> Value {
    let mut v = json!({
        "id": item.id,
        "name": item.name,
        "description": item.description,
        "deprecated": item.is_deprecated,
        "instances": item.amount_integrations,
    });
    if include_profile {
        if let Value::Object(ref mut m) = v {
            m.insert("profile".to_string(), Value::String(profile.to_string()));
        }
    }
    v
}

fn read_from_file(path: &str) -> Result<Value> {
    let raw = if path == "-" {
        eprintln!(
            "{}",
            "Reading contextual data definition from stdin...".dimmed()
        );
        use std::io::Read;
        let mut buf = String::new();
        std::io::stdin().read_to_string(&mut buf)?;
        buf
    } else {
        eprintln!(
            "{}",
            format!("Reading contextual data definition from {path}...").dimmed()
        );
        std::fs::read_to_string(path)?
    };
    Ok(serde_json::from_str(&raw)?)
}

pub async fn run_list(targets: &[Arc<ExecutionTarget>], output: OutputFormat) -> Result<()> {
    eprintln!("{}", "Fetching contextual data integrations...".dimmed());
    let include_profile = targets.len() > 1;

    let per_profile = fan_out(targets, |t| async move {
        let api = ContextualDataApi::new(&t.client);
        Ok(api.list().await?)
    })
    .await;

    let mut all_json: Vec<Value> = Vec::new();
    let mut all_items: Vec<(String, ContextualDataIntegration)> = Vec::new();
    for (profile, result) in per_profile {
        match result {
            Ok(resp) => {
                for wrapper in resp.integrations {
                    let item: ContextualDataIntegration = wrapper.into();
                    all_json.push(item_to_json(&item, include_profile, &profile));
                    all_items.push((profile.clone(), item));
                }
            }
            Err(e) => eprintln!("{}", format!("error from profile '{profile}': {e:#}").red()),
        }
    }

    match output {
        OutputFormat::Json => render::render_json(&all_json)?,
        OutputFormat::Agents => {
            let toon =
                toon_encode(&all_json).map_err(|e| anyhow::anyhow!("TOON encoding failed: {e}"))?;
            println!("{toon}");
        }
        OutputFormat::Text => {
            if all_items.is_empty() {
                render::print_no_results("No contextual data integrations found.");
                return Ok(());
            }
            let rows: Vec<Vec<String>> = all_items
                .iter()
                .map(|(profile, item)| {
                    vec![
                        profile.clone(),
                        item.id.clone().unwrap_or_default(),
                        item.name.clone().unwrap_or_default(),
                        item.display_description().to_string(),
                        if item.is_deprecated {
                            "deprecated".to_string()
                        } else {
                            "active".to_string()
                        },
                        item.amount_integrations
                            .map(|n| n.to_string())
                            .unwrap_or_default(),
                    ]
                })
                .collect();
            render::render_table(
                &["ID", "Name", "Description", "Status", "Instances"],
                rows,
                include_profile,
            );
        }
    }
    Ok(())
}

pub async fn run_get(
    targets: &[Arc<ExecutionTarget>],
    id: &str,
    output: OutputFormat,
) -> Result<()> {
    eprintln!(
        "{}",
        format!("Fetching contextual data integration {id}...").dimmed()
    );
    let include_profile = targets.len() > 1;
    let id = id.to_string();

    let per_profile = fan_out(targets, |t| {
        let id = id.clone();
        async move {
            let api = ContextualDataApi::new(&t.client);
            Ok(api.get(&id).await?)
        }
    })
    .await;

    let mut all_results: Vec<Value> = Vec::new();
    for (profile, result) in per_profile {
        match result {
            Ok(mut val) => {
                // Normalize: API returns {integrationDetail: {integration: {...}, ...}}
                // Extract the inner integration and flatten to match list output.
                if let Some(detail) = val.get("integrationDetail") {
                    if let Some(inner) = detail.get("integration") {
                        val = json!({
                            "id": inner.get("id"),
                            "name": inner.get("name"),
                            "description": inner.get("description"),
                        });
                    }
                }
                if include_profile {
                    render::tag_get_result(&mut val, &profile);
                }
                all_results.push(val);
            }
            Err(e) => eprintln!("{}", format!("error from profile '{profile}': {e:#}").red()),
        }
    }

    match output {
        OutputFormat::Json => render::render_json_auto(&all_results)?,
        OutputFormat::Agents => {
            let toon = toon_encode(&all_results)
                .map_err(|e| anyhow::anyhow!("TOON encoding failed: {e}"))?;
            println!("{toon}");
        }
        OutputFormat::Text => {
            render::render_get_text(
                &all_results,
                include_profile,
                "Contextual data integration not found.",
                None::<&dyn Fn(&Value)>,
            )?;
        }
    }
    Ok(())
}

pub async fn run_create(
    targets: &[Arc<ExecutionTarget>],
    from_file: &str,
    output: OutputFormat,
) -> Result<()> {
    let body = read_from_file(from_file)?;
    eprintln!("{}", "Creating contextual data integration...".dimmed());
    let include_profile = targets.len() > 1;

    let per_profile = fan_out(targets, |t| {
        let body = body.clone();
        async move {
            let api = ContextualDataApi::new(&t.client);
            Ok(api.save(&body).await?)
        }
    })
    .await;

    let mut all_results: Vec<Value> = Vec::new();
    for (profile, result) in per_profile {
        match result {
            Ok(resp) => {
                let id = resp.integration_id.as_deref().unwrap_or("unknown");
                eprintln!(
                    "{}",
                    format!(
                        "Created contextual data integration (ID: {id}) in profile '{profile}'."
                    )
                    .green()
                );
                let mut v = json!({ "id": resp.integration_id });
                if include_profile {
                    if let Value::Object(ref mut m) = v {
                        m.insert("profile".to_string(), Value::String(profile.to_string()));
                    }
                }
                all_results.push(v);
            }
            Err(e) => eprintln!("{}", format!("error from profile '{profile}': {e:#}").red()),
        }
    }

    match output {
        OutputFormat::Json => render::render_json_auto(&all_results)?,
        OutputFormat::Agents => {
            let toon = toon_encode(&all_results)
                .map_err(|e| anyhow::anyhow!("TOON encoding failed: {e}"))?;
            println!("{toon}");
        }
        OutputFormat::Text => {}
    }
    Ok(())
}

pub async fn run_update(
    targets: &[Arc<ExecutionTarget>],
    id: &str,
    from_file: &str,
    output: OutputFormat,
) -> Result<()> {
    let body = read_from_file(from_file)?;
    eprintln!(
        "{}",
        format!("Updating contextual data integration {id}...").dimmed()
    );
    let id = id.to_string();

    let per_profile = fan_out(targets, |t| {
        let body = body.clone();
        let id = id.clone();
        async move {
            let api = ContextualDataApi::new(&t.client);
            Ok(api.update(&id, &body).await?)
        }
    })
    .await;

    let mut all_results: Vec<Value> = Vec::new();
    for (profile, result) in per_profile {
        match result {
            Ok(val) => {
                eprintln!(
                    "{}",
                    format!("Updated contextual data integration {id} in profile '{profile}'.")
                        .green()
                );
                all_results.push(val);
            }
            Err(e) => eprintln!("{}", format!("error from profile '{profile}': {e:#}").red()),
        }
    }

    match output {
        OutputFormat::Json => render::render_json_auto(&all_results)?,
        OutputFormat::Agents => {
            let toon = toon_encode(&all_results)
                .map_err(|e| anyhow::anyhow!("TOON encoding failed: {e}"))?;
            println!("{toon}");
        }
        OutputFormat::Text => {}
    }
    Ok(())
}

pub async fn run_delete(targets: &[Arc<ExecutionTarget>], id: &str) -> Result<()> {
    eprintln!(
        "{}",
        format!("Deleting contextual data integration {id}...").dimmed()
    );
    let id = id.to_string();
    let per_profile = fan_out(targets, |t| {
        let id = id.clone();
        async move {
            let api = ContextualDataApi::new(&t.client);
            api.delete(&id).await?;
            Ok(())
        }
    })
    .await;
    for (profile, result) in per_profile {
        match result {
            Ok(()) => eprintln!(
                "{}",
                format!("Contextual data integration {id} deleted in profile '{profile}'.").green()
            ),
            Err(e) => eprintln!("{}", format!("error from profile '{profile}': {e:#}").red()),
        }
    }
    Ok(())
}

pub async fn run_definition(
    targets: &[Arc<ExecutionTarget>],
    id: &str,
    output: OutputFormat,
) -> Result<()> {
    eprintln!(
        "{}",
        format!("Fetching contextual data integration definition {id}...").dimmed()
    );
    let include_profile = targets.len() > 1;
    let id = id.to_string();

    let per_profile = fan_out(targets, |t| {
        let id = id.clone();
        async move {
            let api = ContextualDataApi::new(&t.client);
            Ok(api.get_definition(&id).await?)
        }
    })
    .await;

    let mut all_results: Vec<Value> = Vec::new();
    for (profile, result) in per_profile {
        match result {
            Ok(mut val) => {
                if include_profile {
                    render::tag_get_result(&mut val, &profile);
                }
                all_results.push(val);
            }
            Err(e) => eprintln!("{}", format!("error from profile '{profile}': {e:#}").red()),
        }
    }

    match output {
        OutputFormat::Json => render::render_json_auto(&all_results)?,
        OutputFormat::Agents => {
            let toon = toon_encode(&all_results)
                .map_err(|e| anyhow::anyhow!("TOON encoding failed: {e}"))?;
            println!("{toon}");
        }
        OutputFormat::Text => {
            render::render_get_text(
                &all_results,
                include_profile,
                "Contextual data integration definition not found.",
                None::<&dyn Fn(&Value)>,
            )?;
        }
    }
    Ok(())
}

pub async fn run_test(
    targets: &[Arc<ExecutionTarget>],
    id: &str,
    output: OutputFormat,
) -> Result<()> {
    eprintln!(
        "{}",
        format!("Testing contextual data integration {id}...").dimmed()
    );
    let id = id.to_string();

    let per_profile = fan_out(targets, |t| {
        let id = id.clone();
        async move {
            let api = ContextualDataApi::new(&t.client);
            Ok(api.test(&id).await?)
        }
    })
    .await;

    let mut all_results: Vec<Value> = Vec::new();
    for (profile, result) in per_profile {
        match result {
            Ok(val) => {
                eprintln!(
                    "{}",
                    format!("Test completed in profile '{profile}'.").green()
                );
                all_results.push(val);
            }
            Err(e) => eprintln!("{}", format!("error from profile '{profile}': {e:#}").red()),
        }
    }

    match output {
        OutputFormat::Json => render::render_json_auto(&all_results)?,
        OutputFormat::Agents => {
            let toon = toon_encode(&all_results)
                .map_err(|e| anyhow::anyhow!("TOON encoding failed: {e}"))?;
            println!("{toon}");
        }
        OutputFormat::Text => {
            for val in &all_results {
                println!("{}", serde_json::to_string_pretty(val)?);
            }
        }
    }
    Ok(())
}
