import * as fs from 'fs';
import * as path from 'path';
import chalk from 'chalk';
import { getTaskProgressForChange } from '../utils/task-progress.js';
import { MarkdownParser } from './parsers/markdown-parser.js';
export class ViewCommand {
    async execute(targetPath = '.') {
        const projectxDir = path.join(targetPath, 'projectx');
        if (!fs.existsSync(projectxDir)) {
            console.error(chalk.red('No projectx directory found'));
            process.exit(1);
        }
        console.log(chalk.bold('\nProjectX Dashboard\n'));
        console.log('═'.repeat(60));
        // Get changes and specs data
        const changesData = await this.getChangesData(projectxDir);
        const specsData = await this.getSpecsData(projectxDir);
        // Display summary metrics
        this.displaySummary(changesData, specsData);
        // Display draft changes
        if (changesData.draft.length > 0) {
            console.log(chalk.bold.gray('\nDraft Changes'));
            console.log('─'.repeat(60));
            changesData.draft.forEach((change) => {
                console.log(`  ${chalk.gray('○')} ${change.name}`);
            });
        }
        // Display active changes
        if (changesData.active.length > 0) {
            console.log(chalk.bold.cyan('\nActive Changes'));
            console.log('─'.repeat(60));
            changesData.active.forEach((change) => {
                const progressBar = this.createProgressBar(change.progress.completed, change.progress.total);
                const percentage = change.progress.total > 0
                    ? Math.round((change.progress.completed / change.progress.total) * 100)
                    : 0;
                console.log(`  ${chalk.yellow('◉')} ${chalk.bold(change.name.padEnd(30))} ${progressBar} ${chalk.dim(`${percentage}%`)}`);
            });
        }
        // Display completed changes
        if (changesData.completed.length > 0) {
            console.log(chalk.bold.green('\nCompleted Changes'));
            console.log('─'.repeat(60));
            changesData.completed.forEach((change) => {
                console.log(`  ${chalk.green('✓')} ${change.name}`);
            });
        }
        // Display specifications
        if (specsData.length > 0) {
            console.log(chalk.bold.blue('\nSpecifications'));
            console.log('─'.repeat(60));
            // Sort specs by requirement count (descending)
            specsData.sort((a, b) => b.requirementCount - a.requirementCount);
            specsData.forEach(spec => {
                const reqLabel = spec.requirementCount === 1 ? 'requirement' : 'requirements';
                console.log(`  ${chalk.blue('▪')} ${chalk.bold(spec.name.padEnd(30))} ${chalk.dim(`${spec.requirementCount} ${reqLabel}`)}`);
            });
        }
        console.log('\n' + '═'.repeat(60));
        console.log(chalk.dim(`\nUse ${chalk.white('projectx list --changes')} or ${chalk.white('projectx list --specs')} for detailed views`));
    }
    async getChangesData(projectxDir) {
        const changesDir = path.join(projectxDir, 'changes');
        if (!fs.existsSync(changesDir)) {
            return { draft: [], active: [], completed: [] };
        }
        const draft = [];
        const active = [];
        const completed = [];
        const entries = fs.readdirSync(changesDir, { withFileTypes: true });
        for (const entry of entries) {
            if (entry.isDirectory() && entry.name !== 'archive') {
                const progress = await getTaskProgressForChange(changesDir, entry.name);
                if (progress.total === 0) {
                    // No tasks defined yet - still in planning/draft phase
                    draft.push({ name: entry.name });
                }
                else if (progress.completed === progress.total) {
                    // All tasks complete
                    completed.push({ name: entry.name });
                }
                else {
                    // Has tasks but not all complete
                    active.push({ name: entry.name, progress });
                }
            }
        }
        // Sort all categories by name for deterministic ordering
        draft.sort((a, b) => a.name.localeCompare(b.name));
        // Sort active changes by completion percentage (ascending) and then by name
        active.sort((a, b) => {
            const percentageA = a.progress.total > 0 ? a.progress.completed / a.progress.total : 0;
            const percentageB = b.progress.total > 0 ? b.progress.completed / b.progress.total : 0;
            if (percentageA < percentageB)
                return -1;
            if (percentageA > percentageB)
                return 1;
            return a.name.localeCompare(b.name);
        });
        completed.sort((a, b) => a.name.localeCompare(b.name));
        return { draft, active, completed };
    }
    async getSpecsData(projectxDir) {
        const specsDir = path.join(projectxDir, 'specs');
        if (!fs.existsSync(specsDir)) {
            return [];
        }
        const specs = [];
        const entries = fs.readdirSync(specsDir, { withFileTypes: true });
        for (const entry of entries) {
            if (entry.isDirectory()) {
                const specFile = path.join(specsDir, entry.name, 'spec.md');
                if (fs.existsSync(specFile)) {
                    try {
                        const content = fs.readFileSync(specFile, 'utf-8');
                        const parser = new MarkdownParser(content);
                        const spec = parser.parseSpec(entry.name);
                        const requirementCount = spec.requirements.length;
                        specs.push({ name: entry.name, requirementCount });
                    }
                    catch (error) {
                        // If spec cannot be parsed, include with 0 count
                        specs.push({ name: entry.name, requirementCount: 0 });
                    }
                }
            }
        }
        return specs;
    }
    displaySummary(changesData, specsData) {
        const totalChanges = changesData.draft.length + changesData.active.length + changesData.completed.length;
        const totalSpecs = specsData.length;
        const totalRequirements = specsData.reduce((sum, spec) => sum + spec.requirementCount, 0);
        // Calculate total task progress
        let totalTasks = 0;
        let completedTasks = 0;
        changesData.active.forEach((change) => {
            totalTasks += change.progress.total;
            completedTasks += change.progress.completed;
        });
        changesData.completed.forEach(() => {
            // Completed changes count as 100% done (we don't know exact task count)
            // This is a simplification
        });
        console.log(chalk.bold('Summary:'));
        console.log(`  ${chalk.cyan('●')} Specifications: ${chalk.bold(totalSpecs)} specs, ${chalk.bold(totalRequirements)} requirements`);
        if (changesData.draft.length > 0) {
            console.log(`  ${chalk.gray('●')} Draft Changes: ${chalk.bold(changesData.draft.length)}`);
        }
        console.log(`  ${chalk.yellow('●')} Active Changes: ${chalk.bold(changesData.active.length)} in progress`);
        console.log(`  ${chalk.green('●')} Completed Changes: ${chalk.bold(changesData.completed.length)}`);
        if (totalTasks > 0) {
            const overallProgress = Math.round((completedTasks / totalTasks) * 100);
            console.log(`  ${chalk.magenta('●')} Task Progress: ${chalk.bold(`${completedTasks}/${totalTasks}`)} (${overallProgress}% complete)`);
        }
    }
    createProgressBar(completed, total, width = 20) {
        if (total === 0)
            return chalk.dim('─'.repeat(width));
        const percentage = completed / total;
        const filled = Math.round(percentage * width);
        const empty = width - filled;
        const filledBar = chalk.green('█'.repeat(filled));
        const emptyBar = chalk.dim('░'.repeat(empty));
        return `[${filledBar}${emptyBar}]`;
    }
}
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