import { FISH_STATIC_HELPERS, FISH_DYNAMIC_HELPERS } from '../templates/fish-templates.js';
/**
 * Generates Fish completion scripts for the ProjectX CLI.
 * Follows Fish completion conventions using the complete command.
 */
export class FishGenerator {
    shell = 'fish';
    /**
     * Generate a Fish completion script
     *
     * @param commands - Command definitions to generate completions for
     * @returns Fish completion script as a string
     */
    generate(commands) {
        // Build top-level commands using push() for loop clarity
        const topLevelLines = [];
        for (const cmd of commands) {
            topLevelLines.push(`# ${cmd.name} command`);
            topLevelLines.push(`complete -c projectx -n '__fish_projectx_no_subcommand' -a '${cmd.name}' -d '${this.escapeDescription(cmd.description)}'`);
        }
        const topLevelCommands = topLevelLines.join('\n');
        // Build command-specific completions using push() for loop clarity
        const commandCompletionLines = [];
        for (const cmd of commands) {
            commandCompletionLines.push(...this.generateCommandCompletions(cmd));
            commandCompletionLines.push('');
        }
        const commandCompletions = commandCompletionLines.join('\n');
        // Static helper functions from template
        const helperFunctions = FISH_STATIC_HELPERS;
        // Dynamic completion helpers from template
        const dynamicHelpers = FISH_DYNAMIC_HELPERS;
        // Assemble final script with template literal
        return `# Fish completion script for ProjectX CLI
# Auto-generated - do not edit manually

${helperFunctions}
${dynamicHelpers}
${topLevelCommands}

${commandCompletions}`;
    }
    /**
     * Generate completions for a specific command
     */
    generateCommandCompletions(cmd) {
        const lines = [];
        // If command has subcommands
        if (cmd.subcommands && cmd.subcommands.length > 0) {
            // Add subcommand completions
            for (const subcmd of cmd.subcommands) {
                lines.push(`complete -c projectx -n '__fish_projectx_using_subcommand ${cmd.name}; and not __fish_projectx_using_subcommand ${subcmd.name}' -a '${subcmd.name}' -d '${this.escapeDescription(subcmd.description)}'`);
            }
            lines.push('');
            // Add flags for parent command
            for (const flag of cmd.flags) {
                lines.push(...this.generateFlagCompletion(flag, `__fish_projectx_using_subcommand ${cmd.name}`));
            }
            // Add completions for each subcommand
            for (const subcmd of cmd.subcommands) {
                lines.push(`# ${cmd.name} ${subcmd.name} flags`);
                for (const flag of subcmd.flags) {
                    lines.push(...this.generateFlagCompletion(flag, `__fish_projectx_using_subcommand ${cmd.name}; and __fish_projectx_using_subcommand ${subcmd.name}`));
                }
                // Add positional completions for subcommand
                if (subcmd.acceptsPositional) {
                    lines.push(...this.generatePositionalCompletion(subcmd.positionalType, `__fish_projectx_using_subcommand ${cmd.name}; and __fish_projectx_using_subcommand ${subcmd.name}`));
                }
            }
        }
        else {
            // Command without subcommands
            lines.push(`# ${cmd.name} flags`);
            for (const flag of cmd.flags) {
                lines.push(...this.generateFlagCompletion(flag, `__fish_projectx_using_subcommand ${cmd.name}`));
            }
            // Add positional completions
            if (cmd.acceptsPositional) {
                lines.push(...this.generatePositionalCompletion(cmd.positionalType, `__fish_projectx_using_subcommand ${cmd.name}`));
            }
        }
        return lines;
    }
    /**
     * Generate flag completion
     */
    generateFlagCompletion(flag, condition) {
        const lines = [];
        const longFlag = `--${flag.name}`;
        const shortFlag = flag.short ? `-${flag.short}` : undefined;
        if (flag.takesValue && flag.values) {
            // Flag with enum values
            for (const value of flag.values) {
                if (shortFlag) {
                    lines.push(`complete -c projectx -n '${condition}' -s ${flag.short} -l ${flag.name} -a '${value}' -d '${this.escapeDescription(flag.description)}'`);
                }
                else {
                    lines.push(`complete -c projectx -n '${condition}' -l ${flag.name} -a '${value}' -d '${this.escapeDescription(flag.description)}'`);
                }
            }
        }
        else if (flag.takesValue) {
            // Flag that takes a value but no specific values defined
            if (shortFlag) {
                lines.push(`complete -c projectx -n '${condition}' -s ${flag.short} -l ${flag.name} -r -d '${this.escapeDescription(flag.description)}'`);
            }
            else {
                lines.push(`complete -c projectx -n '${condition}' -l ${flag.name} -r -d '${this.escapeDescription(flag.description)}'`);
            }
        }
        else {
            // Boolean flag
            if (shortFlag) {
                lines.push(`complete -c projectx -n '${condition}' -s ${flag.short} -l ${flag.name} -d '${this.escapeDescription(flag.description)}'`);
            }
            else {
                lines.push(`complete -c projectx -n '${condition}' -l ${flag.name} -d '${this.escapeDescription(flag.description)}'`);
            }
        }
        return lines;
    }
    /**
     * Generate positional argument completion
     */
    generatePositionalCompletion(positionalType, condition) {
        const lines = [];
        switch (positionalType) {
            case 'change-id':
                lines.push(`complete -c projectx -n '${condition}' -a '(__fish_projectx_changes)' -f`);
                break;
            case 'spec-id':
                lines.push(`complete -c projectx -n '${condition}' -a '(__fish_projectx_specs)' -f`);
                break;
            case 'change-or-spec-id':
                lines.push(`complete -c projectx -n '${condition}' -a '(__fish_projectx_items)' -f`);
                break;
            case 'schema-name':
                lines.push(`complete -c projectx -n '${condition}' -a '(__fish_projectx_schemas)' -f`);
                break;
            case 'shell':
                lines.push(`complete -c projectx -n '${condition}' -a 'zsh bash fish powershell' -f`);
                break;
            case 'path':
                // Fish automatically completes files, no need to specify
                break;
        }
        return lines;
    }
    /**
     * Escape description text for Fish
     */
    escapeDescription(description) {
        return description
            .replace(/\\/g, '\\\\') // Backslashes first
            .replace(/'/g, "\\'") // Single quotes
            .replace(/\$/g, '\\$') // Dollar signs (prevents $())
            .replace(/`/g, '\\`'); // Backticks
    }
}
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