/**
 * Command: Inspect Chains (Current Section)
 */

import type { App, Editor } from "obsidian";
import { resolveSectionContext } from "../analysis/sectionContext";
import { inspectChains } from "../analysis/chainInspector";
import type { ChainRolesConfig, ChainTemplatesConfig, DictionaryLoadResult } from "../dictionary/types";
import type { MindnetSettings } from "../settings";

export interface InspectChainsOptions {
  includeNoteLinks?: boolean;
  includeCandidates?: boolean;
  maxDepth?: number;
  direction?: "forward" | "backward" | "both";
}

/**
 * Format report as pretty-printed string.
 */
function formatReport(report: Awaited<ReturnType<typeof inspectChains>>): string {
  const lines: string[] = [];
  lines.push("=== Chain Inspector Report ===");
  lines.push("");
  lines.push(`Context: ${report.context.file}`);
  if (report.context.heading) {
    lines.push(`Section: ${report.context.heading}`);
  }
  lines.push(`Zone: ${report.context.zoneKind}`);
  lines.push("");

  lines.push("Settings:");
  lines.push(`  - Include Note Links: ${report.settings.includeNoteLinks}`);
  lines.push(`  - Include Candidates: ${report.settings.includeCandidates}`);
  lines.push(`  - Max Depth: ${report.settings.maxDepth}`);
  lines.push(`  - Direction: ${report.settings.direction}`);
  lines.push("");

  lines.push(`Neighbors:`);
  lines.push(`  Incoming: ${report.neighbors.incoming.length}`);
  for (const edge of report.neighbors.incoming.slice(0, 5)) {
    const targetStr = edge.target.heading
      ? `${edge.target.file}#${edge.target.heading}`
      : edge.target.file;
    lines.push(`    - ${edge.rawEdgeType} -> ${targetStr} [${edge.scope}]`);
  }
  if (report.neighbors.incoming.length > 5) {
    lines.push(`    ... and ${report.neighbors.incoming.length - 5} more`);
  }

  lines.push(`  Outgoing: ${report.neighbors.outgoing.length}`);
  for (const edge of report.neighbors.outgoing.slice(0, 5)) {
    const targetStr = edge.target.heading
      ? `${edge.target.file}#${edge.target.heading}`
      : edge.target.file;
    lines.push(`    - ${edge.rawEdgeType} -> ${targetStr} [${edge.scope}]`);
  }
  if (report.neighbors.outgoing.length > 5) {
    lines.push(`    ... and ${report.neighbors.outgoing.length - 5} more`);
  }
  lines.push("");

  lines.push(`Paths:`);
  lines.push(`  Forward: ${report.paths.forward.length}`);
  for (const path of report.paths.forward.slice(0, 3)) {
    const pathStr = path.nodes
      .map((n) => (n.heading ? `${n.file}#${n.heading}` : n.file))
      .join(" -> ");
    lines.push(`    - ${pathStr} (${path.edges.length} edges)`);
  }
  if (report.paths.forward.length > 3) {
    lines.push(`    ... and ${report.paths.forward.length - 3} more`);
  }

  lines.push(`  Backward: ${report.paths.backward.length}`);
  for (const path of report.paths.backward.slice(0, 3)) {
    const pathStr = path.nodes
      .map((n) => (n.heading ? `${n.file}#${n.heading}` : n.file))
      .join(" -> ");
    lines.push(`    - ${pathStr} (${path.edges.length} edges)`);
  }
  if (report.paths.backward.length > 3) {
    lines.push(`    ... and ${report.paths.backward.length - 3} more`);
  }
  lines.push("");

  lines.push(`Gap Heuristics (Findings): ${report.findings.length}`);
  if (report.findings.length === 0) {
    lines.push(`  ✓ No issues detected`);
  } else {
    for (const finding of report.findings) {
      const severityIcon =
        finding.severity === "error"
          ? "❌"
          : finding.severity === "warn"
          ? "⚠️"
          : "ℹ️";
      lines.push(
        `  ${severityIcon} [${finding.severity.toUpperCase()}] ${finding.code}: ${finding.message}`
      );
    }
  }
  lines.push("");

  // Add analysisMeta section
  if (report.analysisMeta) {
    lines.push("Analysis Meta:");
    lines.push(`  - Edges Total: ${report.analysisMeta.edgesTotal}`);
    lines.push(`  - Edges With Canonical: ${report.analysisMeta.edgesWithCanonical}`);
    lines.push(`  - Edges Unmapped: ${report.analysisMeta.edgesUnmapped}`);
    if (Object.keys(report.analysisMeta.roleMatches).length > 0) {
      lines.push(`  - Role Matches:`);
      for (const [roleName, count] of Object.entries(report.analysisMeta.roleMatches)) {
        lines.push(`    - ${roleName}: ${count}`);
      }
    } else {
      lines.push(`  - Role Matches: (none)`);
    }
  }
  lines.push("");

  // Add template matches section
  if (report.templateMatches && report.templateMatches.length > 0) {
    lines.push("Template Matches:");
    // Sort by score desc, then name asc (already sorted in matching)
    const topMatches = report.templateMatches.slice(0, 3);
    for (const match of topMatches) {
      const confidenceEmoji = match.confidence === "confirmed" ? "✓" : match.confidence === "plausible" ? "~" : "?";
      lines.push(`  - ${match.templateName} (score: ${match.score}, confidence: ${confidenceEmoji} ${match.confidence})`);
      if (Object.keys(match.slotAssignments).length > 0) {
        lines.push(`    Slots:`);
        const sortedSlots = Object.keys(match.slotAssignments).sort();
        for (const slotId of sortedSlots) {
          const assignment = match.slotAssignments[slotId];
          if (assignment) {
            const nodeStr = assignment.heading
              ? `${assignment.file}#${assignment.heading}`
              : assignment.file;
            lines.push(`      ${slotId}: ${nodeStr} [${assignment.noteType}]`);
          }
        }
      }
      if (match.missingSlots.length > 0) {
        lines.push(`    Missing slots: ${match.missingSlots.join(", ")}`);
      }
      if (match.requiredLinks > 0) {
        const linksStatus = match.linksComplete ? "complete" : "incomplete";
        lines.push(`    Links: ${match.satisfiedLinks}/${match.requiredLinks} (${linksStatus})`);
      } else if (match.roleEvidence && match.roleEvidence.length > 0) {
        lines.push(`    Links: ${match.satisfiedLinks}/${match.requiredLinks} satisfied`);
      }
    }
    if (report.templateMatches.length > 3) {
      lines.push(`    ... and ${report.templateMatches.length - 3} more`);
    }
  } else if (report.templatesSource) {
    lines.push("Template Matches: (none)");
  }

  // Add templates source info
  if (report.templatesSource) {
    lines.push("");
    lines.push("Templates Source:");
    lines.push(`  - Path: ${report.templatesSource.path}`);
    lines.push(`  - Status: ${report.templatesSource.status}`);
    if (report.templatesSource.loadedAt) {
      const date = new Date(report.templatesSource.loadedAt);
      lines.push(`  - Loaded: ${date.toISOString()}`);
    }
    lines.push(`  - Templates: ${report.templatesSource.templateCount}`);
  }

  // Add template matching profile info
  if (report.templateMatchingProfileUsed) {
    lines.push("");
    lines.push("Template Matching Profile:");
    lines.push(`  - Profile: ${report.templateMatchingProfileUsed.name}`);
    lines.push(`  - Resolved from: ${report.templateMatchingProfileUsed.resolvedFrom}`);
    if (report.templateMatchingProfileUsed.profileConfig) {
      const config = report.templateMatchingProfileUsed.profileConfig;
      if (config.required_links !== undefined) {
        lines.push(`  - Required links: ${config.required_links}`);
      }
      if (config.min_slots_filled_for_gap_findings !== undefined) {
        lines.push(`  - Min slots filled for findings: ${config.min_slots_filled_for_gap_findings}`);
      }
      if (config.min_score_for_gap_findings !== undefined) {
        lines.push(`  - Min score for findings: ${config.min_score_for_gap_findings}`);
      }
    }
  }

  return lines.join("\n");
}

/**
 * Execute inspect chains command.
 */
export async function executeInspectChains(
  app: App,
  editor: Editor,
  filePath: string,
  chainRoles: ChainRolesConfig | null,
  settings: MindnetSettings,
  options: InspectChainsOptions = {},
  chainTemplates?: ChainTemplatesConfig | null,
  templatesLoadResult?: DictionaryLoadResult<ChainTemplatesConfig>
): Promise<void> {
  // Resolve section context
  const context = resolveSectionContext(editor, filePath);

  // Build options with defaults
  const inspectorOptions = {
    includeNoteLinks: options.includeNoteLinks ?? true,
    includeCandidates: options.includeCandidates ?? false,
    maxDepth: options.maxDepth ?? 3,
    direction: options.direction ?? "both",
  };

  // Prepare templates source info
  let templatesSourceInfo: { path: string; status: string; loadedAt: number | null; templateCount: number } | undefined;
  if (templatesLoadResult) {
    templatesSourceInfo = {
      path: templatesLoadResult.resolvedPath,
      status: templatesLoadResult.status,
      loadedAt: templatesLoadResult.loadedAt,
      templateCount: chainTemplates?.templates?.length || 0,
    };
  }

  // Inspect chains
  const report = await inspectChains(
    app,
    context,
    inspectorOptions,
    chainRoles,
    settings.edgeVocabularyPath,
    chainTemplates,
    templatesSourceInfo,
    settings.templateMatchingProfile
  );

  // Log report as JSON
  console.log("=== Chain Inspector Report (JSON) ===");
  console.log(JSON.stringify(report, null, 2));

  // Log pretty-printed summary
  console.log("\n=== Chain Inspector Report (Summary) ===");
  console.log(formatReport(report));
}