open_coverage

#!/usr/bin/env bash

if [[ -z "$1" ]]; then
    echo "Usage: open_coverage <file_path|module_name>"
    echo ""
    echo "Examples:"
    echo "  open_coverage lib/my_app/users.ex"
    echo "  open_coverage MyApp.Users"
    echo "  open_coverage test/my_app/users_test.exs"
    echo "  open_coverage MyApp.UsersTest"
    exit 1
fi

input="$1"
module_name=""

# Detect if input is a file path or module name
if [[ "$input" == *.ex ]] || [[ "$input" == *.exs ]]; then
    # It's a file path - extract module name
    if [[ ! -f "$input" ]]; then
        echo "Error: File not found: $input"
        exit 1
    fi
    # Extract module name from defmodule declaration
    module_name=$(grep -m1 "defmodule" "$input" | sed -E 's/.*defmodule[[:space:]]+([A-Za-z0-9_.]+).*/\1/')
else
    # It's a module name - use directly
    module_name="$input"
fi

if [[ -z "$module_name" ]]; then
    echo "Error: Could not determine module name from input"
    exit 1
fi

# Remove Test suffix if present (for test modules/files)
module_name=$(echo "$module_name" | sed -E 's/Test$//')

# Construct the coverage file path
coverage_file="cover/Elixir.${module_name}.html"

if [[ ! -f "$coverage_file" ]]; then
    echo "Error: Coverage file not found: $coverage_file"
    echo "Make sure you've run: mix test --cover"
    exit 1
fi

echo "Opening: $coverage_file"
open "$coverage_file"