use std::{env, path::PathBuf};

use eyre::{anyhow, bail, Context, Result};

use crate::{browser::mozilla::get_default_profile, config::Browser};

fn expand_glob_paths(path: PathBuf) -> Result<Vec<PathBuf>> {
    let mut paths: Vec<PathBuf> = vec![];
    if let Some(path_str) = path.to_str() {
        for entry in glob::glob(path_str)? {
            if entry.is_ok() {
                paths.push(entry?);
            }
        }
    }
    Ok(paths)
}

pub fn find_chrome_based_paths(config: &Browser) -> Result<(PathBuf, PathBuf)> {
    for path in &config.paths {
        // base paths
        let channels = config.channels.clone().unwrap_or(vec!["".to_string()]);
        for channel in channels {
            // channels
            let path = path.replace("{channel}", &channel);
            let db_path = expand_path(path.as_str())?;
            let glob_db_paths = expand_glob_paths(db_path)?;
            for db_path in glob_db_paths {
                // glob expanded paths
                if db_path.exists() {
                    if let Some(parent) = db_path.parent() {
                        let key_path = [
                            "../../Local State",
                            "../Local State",
                            "Local State",
                        ]
                        .iter()
                        .map(|p| parent.join(p))
                        .find(|p| p.exists())
                        .unwrap_or_else(|| parent.join("Local State"))
                        .canonicalize()
                        .context("canonicalize")?;
                        log::debug!(
                            "Found chrome path {}, {}",
                            db_path.display(),
                            key_path.display()
                        );
                        return Ok((key_path, db_path));
                    }
                }
            }
        }
    }
    Err(anyhow!("can't find cookies file"))
}

pub fn find_mozilla_based_paths(config: &Browser) -> Result<PathBuf> {
    for path in &config.paths {
        // base paths
        let channels = config.channels.clone().unwrap_or(vec!["".to_string()]);
        for channel in channels {
            // channels
            let path = path.replace("{channel}", &channel);
            let firefox_path = expand_path(path.as_str())?;
            let glob_paths = expand_glob_paths(firefox_path)?;
            for path in glob_paths {
                // expanded glob paths
                let profiles_path = path.join("profiles.ini");
                let default_profile =
                    get_default_profile(profiles_path.as_path())
                        .unwrap_or("".to_string());
                let db_path = path.join(default_profile).join("cookies.sqlite");
                if db_path.exists() {
                    log::debug!("Found mozilla path {}", db_path.display());
                    return Ok(db_path);
                }
            }
        }
    }

    bail!("Can't find cookies file")
}

#[cfg(target_os = "macos")]
pub fn find_safari_based_paths(config: &Browser) -> Result<PathBuf> {
    for path in &config.paths {
        // base paths
        let channels = config.channels.clone().unwrap_or(vec!["".to_string()]);
        for channel in channels {
            // channels
            let path = path.replace("{channel}", &channel);
            let safari_path = expand_path(path.as_str())?;
            let glob_paths = expand_glob_paths(safari_path)?;
            for path in glob_paths {
                // expanded glob paths
                if path.exists() {
                    log::debug!("Found safari path {}", path.display());
                    return Ok(path);
                }
            }
        }
    }
    bail!("Can't find cookies file")
}

#[cfg(target_os = "windows")]
pub fn find_ie_based_paths(config: &Browser) -> Result<PathBuf> {
    for path in &config.paths {
        // base paths
        let channels = config.channels.clone().unwrap_or(vec!["".to_string()]);
        for channel in channels {
            // channels

            let path = path.replace("{channel}", &channel);
            let path = expand_path(path.as_str())?;
            let glob_paths = expand_glob_paths(path)?;
            for path in glob_paths {
                // expanded glob paths
                if path.exists() {
                    log::debug!("Found IE path {}", path.display());
                    return Ok(path);
                }
            }
        }
    }

    bail!("Can't find cookies file")
}
#[cfg(target_os = "windows")]
pub fn expand_path(path: &str) -> Result<PathBuf> {
    use regex::Regex;
    // Define a regex pattern to match placeholders like %SOMETHING%
    let re = Regex::new(r"%([^%]+)%")?;

    // Clone the input path for modification
    let mut expanded_path = path.to_owned();

    // Iterate over all matches of the regex pattern in the input path
    for capture in re.captures_iter(path) {
        // Get the matched placeholder (e.g., "APPDATA" from "%APPDATA%")
        let placeholder = &capture[1];

        // Try to get the corresponding environment variable value
        if let Ok(var_value) = env::var(placeholder) {
            // Replace the placeholder with the environment variable value
            expanded_path = expanded_path.replace(&capture[0], &var_value);
        }
    }

    // Convert the expanded path to a PathBuf
    let path_buf = PathBuf::from(expanded_path);

    Ok(path_buf)
}

#[cfg(unix)]
pub fn expand_path(path: &str) -> Result<PathBuf> {
    // Get the value of the HOME environment variable
    let home = env::var("HOME")?;

    // Replace ~ or $HOME with the actual home directory path
    let expanded_path = path.replace('~', &home).replace("$HOME", &home);

    // Convert the expanded path to a PathBuf
    Ok(PathBuf::from(expanded_path))
}
